Skip to content
BrightReviewLab

10 Best Glass Air Fryer in 2026

Discover the top glass air fryers of 2026. This guide compares transparency, safety, cooking functions, and capacity to help you choose the perfect transparent

As an Amazon Associate we earn from qualifying purchases. We may earn a commission when you buy through links on this page, at no additional cost to you. Read our affiliate disclosure.As an Amazon Associate we earn from qualifying purchases.Purchases through our links may earn us a commission, at no extra cost to you. Read our affiliate disclosure.
In this guide
  1. 01Top 3 picks
  2. 02Compare all 10
  3. 03In-depth reviews
  4. 04Buying guide
  5. 05Use and care
  6. 06Common questions
  7. 07Final verdict

Glass air fryers offer a unique blend of modern cooking technology and classic kitchen aesthetics. They allow you to monitor food without opening the basket, ensuring even cooking and saving energy. These models prioritize safety by removing toxic coatings found in traditional nonstick options.

We evaluated ten leading models based on capacity, power, and ease of use. Our analysis focused on how well the glass construction holds up during high-heat cooking. We also considered versatility, looking at preset functions and storage solutions included with each unit.

Each selection highlights specific strengths like speed, health safety, or family-sized capacity. While prices and availability shift frequently, these picks represent the best options available right now. Always check current listings before making your final purchase decision today.

Top 3 Picks for Best Glass Air Fryer

Best Budget

Nutrichef 5.8 Quart Air Fryer
Nutrichef 5.8 Quart Air Fryer

4.5Editor score

Transparent bowl for viewing
8-in-1 preset modes
Compact stainless steel design

Check price

Editor's Choice

Cuisinart Air Fryer with Glass Basket
Cuisinart Air Fryer with Glass Basket

4.6Editor score

True visibility cooking window
PFAS-free borosilicate glass
Heat retention auto-pause

Check price

Best Premium

Ninja Crispi Pro Glass Air Fryer
Ninja Crispi Pro Glass Air Fryer

4.6Editor score

Modular base system
1800W high power
Leakproof storage lids

Check price

Top 10 Best Glass Air Fryer in 2026 Compared

This table provides a side-by-side overview of the top glass air fryers available today. Compare key specifications like capacity, temperature range, and unique features to find the model that fits your kitchen needs.

ProductsSpecificationsEditor scorePrice
1Cuisinart Air Fryer

Editor's Choice

Cuisinart Air Fryer
4 Quart capacity
450F max temp
5 cooking functions
Dishwasher safe parts
4.6Editor score

Check price

2Nutrichef 5.8 Quart

Editor's Choice

Nutrichef 5.8 Quart
5.8 Quart capacity
390F max temp
8 preset modes
1200W power
4.5Editor score

Check price

3Ninja Crispi Pro Cyberspace

Best Premium

Ninja Crispi Pro Cyberspace
6 Quart glass container
1800W power
6-in-1 functions
Modular base design
4.6Editor score

Check price

4Ninja Crispi Green

Ninja Crispi Green
4 Quart container
4-in-1 functions
Pod-style power source
Space-saving storage
4.4Editor score

Check price

5Ninja Crispi Pro Bone

Ninja Crispi Pro Bone
6 Quart capacity
1800W output
Dehydrate function
Thermal shock glass
4.6Editor score

Check price

6Ninja Crispi Pro Ash Grey

Ninja Crispi Pro Ash Grey
6 Quart capacity
1800W output
Dehydrate function
Thermal shock glass
4.6Editor score

Check price

7Chefman Crispinator

Chefman Crispinator
8 Quart capacity
450F max temp
TurboFry Pro tech
Red Dot Design
4.5Editor score

Check price

8Ninja Crispi Pro Cherry

Ninja Crispi Pro Cherry
6 Quart capacity
1800W output
Leakproof storage
Elevated design
4.6Editor score

Check price

9Ninja Crispi Stone

Ninja Crispi Stone
4 Quart container
4-in-1 functions
Pod-style design
Dishwasher safe
4.4Editor score

Check price

10Nutrichef 5.8 Quart White

Nutrichef 5.8 Quart White
5.8 Quart capacity
390F max temp
Glass cooking bowl
Compact design
4.5Editor score

Check price

1. Cuisinart Air Fryer – Best Overall Glass Air Fryer

Cuisinart Air Fryer, Glass Basket & ClearView Window, 5 Functions, 4 Qt4.6Editor scoreCheck price on Amazon
Cuisinart Air Fryer
4 Quart basket
450F max heat
Auto-pause heating
PFAS-free glass

The Cuisinart Air Fryer stands out as a top choice for health-conscious cooks. It features a durable borosilicate glass basket that replaces traditional metal options. This design allows you to see food cooking clearly without opening the door and losing heat.

Pros

  • Clear view window
  • Even cooking results
  • Heat retention pause
  • Easy cleanup process
  • PFAS-free materials

Cons

  • Higher price point
  • Small counter footprint

We may earn a commission when you buy through this link, at no additional cost to you.

Its performance is enhanced by an intelligent system that pauses heating when the basket opens. This ensures safety and prevents temperature drops that can lead to soggy results. The digital interface offers five distinct functions for versatile meal preparation.

While the price is higher than standard models, the health benefits justify the investment. The glass construction eliminates concerns about nonstick coatings degrading over time. It also serves directly to the table, reducing the need for extra serving dishes.

This unit is ideal for families who prioritize safety and visibility. The 4-quart capacity handles meals for four people effectively. We recommend it for those seeking a reliable, toxin-free cooking experience with modern convenience features.

Superior Visibility and Control

The clear viewing window ensures you can monitor doneness precisely without interrupting the cooking cycle.

Health-First Material Safety

Built with PFAS-free components, this fryer avoids harmful chemicals often found in traditional air fryer baskets.

Check price on Amazon

We may earn a commission when you buy through this link, at no additional cost to you.

2. Nutrichef 5.8 Quart – Best Budget Glass Air Fryer

Nutrichef 5.8 Quart Air Fryer | 8-1 Preset Cook Modes | Transparent Fry Bowl for Best Cooking Results | Cook Shrimp, Steak, Fries, Wings, Chicken & More | Precise Temperature Control & Time | Grey4.5Editor scoreCheck price on Amazon
Nutrichef 5.8 Quart
5.8 Quart capacity
390F max temp
1200W power
Transparent bowl

The Nutrichef 5.8 Quart model delivers exceptional value for budget shoppers. It combines a transparent cooking bowl with a robust stainless steel housing. This construction offers durability while allowing users to check progress visually during operation.

Pros

  • Affordable pricing
  • Large capacity
  • Preset cooking modes
  • Stainless steel body
  • Easy to clean

Cons

  • Lower max temp
  • Shorter timer range

We may earn a commission when you buy through this link, at no additional cost to you.

With eight preset cooking modes, it simplifies meal preparation significantly. You can easily cook items like steak, wings, and fries with minimal manual input. The 1200W heating element ensures rapid heating times for efficient daily use.

While it lacks the high temperatures of premium models, it handles most everyday tasks well. The 5.8-quart capacity is sufficient for small to medium families. Cleaning is straightforward due to the non-stick coating on the tray.

This appliance is perfect for those new to air frying or on a tight budget. It balances cost and functionality effectively without compromising basic safety features. We suggest it for casual cooks seeking an entry-level glass option.

Cost-Effective Performance

Offering a competitive price point, this unit makes glass technology accessible to a wider range of buyers.

Convenient Preset Options

Eight preset modes reduce the guesswork involved in setting time and temperature for common dishes.

Check price on Amazon

We may earn a commission when you buy through this link, at no additional cost to you.

3. Ninja Crispi Pro Cyberspace – Best Premium Glass Air Fryer

Ninja Crispi Pro Glass Air Fryer, 6-in-1, Cyberspace, AS101CY4.6Editor scoreCheck price on Amazon
Ninja Crispi Pro Cyberspace
6 Quart container
1800W power
Dehydrate function
Modular base

The Ninja Crispi Pro sets a new standard for premium glass air fryers. Its modular base system accommodates different container sizes, offering unmatched flexibility. You can switch between the 2.5-quart and 6-quart glassware depending on your meal needs.

Pros

  • High wattage
  • Modular system
  • Safe storage lids
  • Large capacity
  • Thermal shock glass

Cons

  • High cost
  • Complex assembly

We may earn a commission when you buy through this link, at no additional cost to you.

With 1800 watts of power, it cooks whole chickens and large batches quickly. The borosilicate glass containers are designed to handle extreme temperature changes without cracking. This allows for direct transition from freezer to air fryer without thawing.

The included leakproof lids make this unit a complete meal prep solution. You can store leftovers directly in the glass container used for cooking. However, the high price and complex setup might deter simpler cooks.

This device is best for serious home cooks needing versatile, high-performance tools. The ability to scale capacity while maintaining quality is a standout feature. We recommend it for those willing to invest in a comprehensive cooking system.

Modular Versatility

The ability to swap containers allows one base unit to serve multiple cooking roles efficiently.

Thermal Durability

Specialized glass handles thermal shock well, ensuring safety even during rapid temperature shifts.

Check price on Amazon

We may earn a commission when you buy through this link, at no additional cost to you.

4. Ninja Crispi Green – Best Portable Glass Air Fryer

Ninja Crispi Glass Air Fryer, 4-in-1, Green, FN101SG4.4Editor scoreCheck price on Amazon
Ninja Crispi Green
4 Quart container
Pod-style design
4-in-1 functions
Nestable storage

The Ninja Crispi Green offers a unique portable approach to glass air frying. Its PowerPod design is small enough to fit in a cabinet or travel. This makes it ideal for dorm rooms or RVs where counter space is limited.

Pros

  • Portable power pod
  • Space-saving storage
  • Surface-safe feet
  • Leakproof lids
  • Easy cleanup

Cons

  • Smaller capacity
  • Limited functions

We may earn a commission when you buy through this link, at no additional cost to you.

It works with two glass container sizes to suit different meal portions. The 4-quart container is sufficient for small families or individual meal prep. Safety is prioritized with fixed heat-safe feet that protect countertops from damage.

While the 4-in-1 functionality is basic, it covers essential tasks like frying and baking. The leakproof lids ensure meals stay fresh during transport. However, the lower wattage means cooking times might be longer for large items.

This model suits users needing a flexible, easy-to-store solution. Its compact design does not sacrifice the benefits of glass cooking. We recommend it for individuals or small households with limited kitchen space.

Compact Footprint

The pod-style design allows for flexible storage options that fit into tight kitchen spaces.

Integrated Storage

Included snap-lock lids mean you can store food without additional containers.

Check price on Amazon

We may earn a commission when you buy through this link, at no additional cost to you.

5. Ninja Crispi Pro Bone – Best Glass Air Fryer for Large Families

Ninja Crispi Pro Glass Air Fryer, 6-in-1, Bone, AS101LG4.6Editor scoreCheck price on Amazon
Ninja Crispi Pro Bone
6 Quart capacity
1800W power
Dehydrate option
Family size

The Ninja Crispi Pro in Bone color brings premium features to large kitchens. It includes both 6-quart and 2.5-quart containers to manage varying meal sizes efficiently. This ensures you never overcook small portions or undercook family dinners.

Pros

  • Large 6 qt capacity
  • High wattage speed
  • Safe glass containers
  • Storage solution
  • Dehydrate mode

Cons

  • Expensive unit
  • Heavy glass pieces

We may earn a commission when you buy through this link, at no additional cost to you.

Its 1800W heating element delivers fast results even for dense items like whole chickens. The borosilicate glass containers are free from PFAS and PTFE for safer eating. You can prepare and store meals in the same vessel without extra dishes.

While the weight of the glass adds to stability, it also makes handling heavier when full. The dehydrate function adds value by allowing homemade jerky or dried fruit. It is a comprehensive system for health-focused large households.

We suggest this model for families needing robust cooking capacity and storage. The color options help match modern kitchen decor styles. It represents a top-tier choice for those prioritizing capacity and health safety.

Dual Capacity Utility

Having two glass sizes means you can optimize cooking and storage for different recipes daily.

Non-Toxic Safety

All food-contact surfaces are free from forever chemicals, ensuring long-term health safety.

Check price on Amazon

We may earn a commission when you buy through this link, at no additional cost to you.

6. Ninja Crispi Pro Ash Grey – Best Glass Air Fryer for Modern Kitchens

Ninja Crispi Pro Glass Air Fryer, 6-in-1, Ash Grey, AS101DG4.6Editor scoreCheck price on Amazon
Ninja Crispi Pro Ash Grey
6 Quart capacity
1800W power
Modern design
Storage included

The Ash Grey Ninja Crispi Pro adds a modern touch to kitchen counters. It features a stainless steel modular base that fits multiple glass container sizes seamlessly. This design flexibility is perfect for households with varied cooking needs.

Pros

  • Sleek aesthetic
  • Flexible modular base
  • Leakproof storage
  • Thermal shock glass
  • High performance

Cons

  • Higher cost
  • Heavy unit weight

We may earn a commission when you buy through this link, at no additional cost to you.

Its thermal shock resistant glass is designed to handle extreme temperature changes. This reduces breakage risks during rapid cooking cycles. The 1800W power ensures quick cooking times for daily meals and large batches alike.

The included leakproof lids help maintain freshness for stored leftovers. However, the price point is higher than many competitors in the market. Cleaning requires care to avoid damaging the glass surfaces during washing.

This unit is ideal for those valuing both style and functionality. The grey finish matches well with stainless steel appliances found in many homes. We recommend it for homeowners seeking a cohesive modern kitchen setup.

Aesthetic Integration

The sleek design complements modern kitchen environments without clashing with existing appliances.

Flexible Sizing

The modular base adjusts to different container sizes, offering versatility for various meal needs.

Check price on Amazon

We may earn a commission when you buy through this link, at no additional cost to you.

7. Chefman Crispinator – Best Large Capacity Glass Air Fryer

Chefman Crispinator Air Fryer 6-in-1 with 8 Qt capacity, 450°F Max Temp with TurboFry Pro Technology for Fast and Even Results, Viewing Window, Nonstick Ceramic Basket4.5Editor scoreCheck price on Amazon
Chefman Crispinator
8 Quart capacity
450F max temp
TurboFry Pro
Ceramic basket

The Chefman Crispinator offers an impressive 8-quart capacity for big meal prep. It reaches 450F for rapid cooking results that mimic deep frying. The TurboFry Pro technology ensures even heat distribution across large food batches.

Pros

  • Large 8 qt size
  • High heat output
  • Red Dot design
  • Shake notifications
  • Even cooking

Cons

  • Bulky dimensions
  • Nonstick coating

We may earn a commission when you buy through this link, at no additional cost to you.

Its viewing window allows you to monitor the cooking process without opening the basket. The built-in LED notifications remind you to shake or flip food halfway through. This helps achieve consistent results across all items in the basket.

While the ceramic basket is easier to clean, it still uses a coating rather than bare glass. This might be a consideration for those strictly avoiding all non-stick materials. The design has won awards for its stylish look and performance.

We recommend this for users who need significant volume capacity. It is well-suited for holiday meals or feeding a large group. The combination of size and speed makes it a practical choice for busy cooks.

High Heat Capability

The 450F max temperature ensures foods get crispy and cooked quickly without overcooking inside.

Alert System

Integrated LED notifications help users maintain even cooking without constant manual checking.

Check price on Amazon

We may earn a commission when you buy through this link, at no additional cost to you.

8. Ninja Crispi Pro Cherry – Best Glass Air Fryer for Design Lovers

Ninja Crispi Pro Glass Air Fryer, 6-in-1, Cherry, AS101RD14.6Editor scoreCheck price on Amazon
Ninja Crispi Pro Cherry
6 Quart capacity
1800W power
Vibrant color
Leakproof lids

The Cherry Ninja Crispi Pro brings a bold color choice to kitchen appliances. It shares the high-performance features of the other Pro models including the modular base. This base adjusts to fit different glass sizes for flexible cooking sessions.

Pros

  • Stylish color
  • Flexible containers
  • Modular base
  • Safe storage
  • Even cooking

Cons

  • Higher price
  • Color options limited

We may earn a commission when you buy through this link, at no additional cost to you.

Its elevated glass design allows you to keep an eye on food progress easily. The glass containers are designed for safe storage and reheating without transfers. This makes meal prep simpler and reduces dish usage significantly.

While the color may not suit every kitchen, it adds a distinct personality. The performance matches the premium expectations of the Ninja brand. It offers robust functionality with a unique visual appeal on the counter.

This model is best for those who want to express style through kitchen tools. It is a solid choice for families needing versatile glass storage options. We recommend it for design-conscious buyers looking for a standout appliance.

Bold Aesthetic

The vibrant finish allows users to express personal style while cooking nutritious meals.

Efficient Cooking

High wattage ensures quick cooking times even when using the larger 6-quart container.

Check price on Amazon

We may earn a commission when you buy through this link, at no additional cost to you.

9. Ninja Crispi Stone – Best Glass Air Fryer for Small Spaces

Ninja Crispi Glass Air Fryer, 4-in-1, Stone, FN101ST4.4Editor scoreCheck price on Amazon
Ninja Crispi Stone
4 Quart capacity
Pod power source
Safe feet
Leakproof lids

The Ninja Crispi Stone offers a neutral tone that fits any kitchen decor. Its pod-style power source is designed to be stored inside the glass containers. This saves valuable drawer space and keeps cords organized neatly.

Pros

  • Compact design
  • Space-saving storage
  • Safe surface feet
  • Versatile containers
  • Easy cleanup

Cons

  • Limited wattage
  • Small max temp

We may earn a commission when you buy through this link, at no additional cost to you.

The 4-quart glass container handles standard daily meals with ease. It features fixed heat-safe feet that protect countertops from heat damage. This allows for safe placement on various surfaces without needing trivets.

While it is smaller than the Pro models, it maintains essential health benefits. The glass is toxin-free and easy to clean for daily use. It is a practical option for those prioritizing space efficiency over raw power.

We suggest this for individuals or couples with limited counter space. The leakproof lids support efficient meal prep routines. It balances compact size with necessary functionality for daily needs.

Space Efficiency

The nested storage design ensures the unit fits neatly into small cabinets or drawers.

Surface Protection

Fixed heat-safe feet prevent damage to granite or marble countertops during operation.

Check price on Amazon

We may earn a commission when you buy through this link, at no additional cost to you.

10. Nutrichef 5.8 Quart White – Best Entry Level Glass Air Fryer

Nutrichef 5.8 Quart Air Fryer | 8-in-1 Preset Cook Modes| Transparent Fry Bowl for Best Cooking Results | Cook Shrimp, Steak, Fries, Wings, Chicken & More | Precise Temperature Control & Time | White4.5Editor scoreCheck price on Amazon
Nutrichef 5.8 Quart White
5.8 Quart capacity
390F max temp
8 presets
Stainless steel

The Nutrichef 5.8 Quart White provides a clean look for bright kitchens. It features a transparent cooking bowl that allows for visual monitoring during use. This glass bowl is designed for durability under normal kitchen conditions.

Pros

  • Affordable white finish
  • Large capacity
  • Transparent bowl
  • Easy controls
  • Compact size

Cons

  • Basic features
  • Heavier glass

We may earn a commission when you buy through this link, at no additional cost to you.

With eight presets, it simplifies cooking common items like shrimp and wings. The 5.8-quart capacity offers room for family-sized portions without bulk. The controls are straightforward, making it easy for all users to operate.

While it does not have advanced connectivity or high wattage, it delivers reliability. The temperature control is precise enough for standard recipes. Cleaning requires care due to the weight of the glass components.

This unit is ideal for entry-level users seeking a safe alternative to metal baskets. It balances cost and capacity effectively. We recommend it for those wanting a simple, reliable glass air frying experience.

Clean Appearance

The white finish offers a neutral aesthetic that blends easily with most kitchen designs.

User Friendly Operation

Simple controls and presets ensure that even beginners can use the appliance confidently.

Check price on Amazon

We may earn a commission when you buy through this link, at no additional cost to you.

Buying Guide – How to Choose the Best Glass Air Fryer

Selecting the right glass air fryer involves evaluating capacity, power, and safety features. This section breaks down the key factors to help you make an informed decision.

Capacity and Size

Capacity determines how much food you can cook at once. For singles or couples, 2 to 4 quarts is often sufficient. Families typically need 6 quarts or more to cook whole chickens or large batches of vegetables. Always check the external dimensions to ensure the unit fits your counter space.

Choose a size that matches your typical meal volume to avoid undercooking or wasted space.

Wattage and Power

Higher wattage leads to faster cooking and crispier results. Models with 1800 watts can handle dense foods like whole meats easily. Lower wattage units might take longer and may not achieve the same level of crunch. Consider your cooking speed needs before selecting a lower power model.

Opt for higher wattage if you want quick cooking times for large meals.

Glass Safety and Material

Borosilicate glass is preferred for its ability to handle thermal shock. It is more resistant to cracking when exposed to temperature changes. Ensure the glass is free from PFAS and PTFE for safe cooking. Look for containers designed to handle extreme heat without degrading.

Verify that the glass material is rated for high-temperature use and safety.

Temperature Range

A wider temperature range allows for versatile cooking methods. Some models reach 450F for searing while others top out lower. Check if the unit supports low temperatures for dehydrating foods. Consistent temperature control is vital for predictable results.

Look for a range that supports both high-heat crisping and low-heat drying.

Ease of Cleaning

Glass baskets should ideally be dishwasher safe for convenience. Check if the crisper plates and lids can also be washed in a dishwasher. Smooth surfaces are easier to wipe down after use. Avoid models with complex crevices that trap food debris.

Select units with dishwasher-safe components to simplify your cleanup routine.

Preset Functions

Preset modes can simplify cooking by handling time and temperature adjustments. Look for functions like air fry, bake, and dehydrate. More presets offer greater versatility for different meal types. However, ensure you have manual override options for custom recipes.

Prioritize models with presets that match your most common cooking habits.

Storage and Design

Glass containers often double as storage containers to reduce dishware. Some models include lids that seal for leftovers. Consider the footprint of the unit on your counter. Modular designs can offer more flexibility in how you store the power unit.

Choose a design that offers integrated storage to save drawer space.

Safety Features

Safety features like automatic shut-off prevent overheating. Heat-safe feet protect countertops from damage during operation. Ensure the unit is stable on the counter and does not tip easily. Check for certifications like UL or ETL approval for electrical safety.

Verify that the appliance includes basic safety mechanisms like auto shut-off.

How to Use and Care for Your Glass Air Fryer

Before first use, wash the glass container and basket with warm soapy water. Remove any protective films or stickers from the unit. Place the appliance on a stable, heat-resistant surface away from walls to ensure proper ventilation during operation.

When cooking, avoid overfilling the basket to ensure proper air circulation. Shake the food halfway through the cycle for even cooking results. Use tongs instead of metal utensils to prevent scratching the glass surface during preparation.

After use, allow the unit to cool completely before washing. Place the glass components in the dishwasher or hand wash them gently. Store the power unit and accessories in a dry place to maintain longevity and prevent electrical issues.

Frequently Asked Questions

Are glass air fryers safer than traditional models?

Glass air fryers often eliminate the need for nonstick coatings, reducing exposure to chemicals. However, you must handle the glass with care to avoid breakage. The transparency also allows you to monitor cooking to prevent burning.

Can you cook frozen food in a glass air fryer?

Yes, many models support cooking directly from frozen. The thermal shock resistant glass handles temperature changes better than standard glass. Check your specific model manual to confirm the temperature limits for frozen items.

How do you prevent the glass from breaking?

Avoid sudden temperature changes by not adding cold water to a hot basket. Let the unit cool naturally before cleaning. Always use oven mitts when handling hot glass parts to prevent thermal shock and injury.

Is the glass dishwasher safe?

Most glass components are dishwasher safe on the top rack. However, placing them on the top rack prevents damage from the heating element. Hand washing is often recommended to extend the lifespan of the glass over time.

What is the difference between borosilicate and regular glass?

Borosilicate glass contains boron which makes it resistant to thermal shock. Regular glass can crack when exposed to rapid temperature changes. Always choose borosilicate for high-heat appliances to ensure safety and durability.

Do glass air fryers cook food faster?

Glass conducts heat well but may take slightly longer to preheat than metal. However, the even distribution often leads to more consistent cooking times. High wattage models compensate for preheat differences effectively.

Final Thoughts on Choosing the Best Glass Air Fryer

Glass air fryers offer a unique combination of visibility, safety, and versatility for modern kitchens. Our top picks range from budget-friendly options like the Nutrichef to premium systems like the Ninja Crispi Pro. Each model caters to different needs regarding capacity and power.

When making your final decision, consider how much space you have and how many people you are cooking for. Prioritize safety features and ease of cleaning to ensure daily use remains hassle-free. The right unit will enhance your cooking experience significantly.

Prices and availability can change so checking the current listings is always recommended. We hope this guide helps you find a glass air fryer that fits your lifestyle. Enjoy your healthy and delicious meals with the perfect kitchen tool.