What counts as an image tool?

Any utility that reads, modifies, or re-encodes a raster image. The category covers compression, resizing, cropping, rotation, format conversion, color sampling, and asset generation such as favicons.

Which formats do these tools accept?

JPEG, PNG, and WebP are universally supported. GIF input works for the Image to PDF tool. HEIC files from iPhones are accepted by some browsers when the OS provides a decoder; convert to JPEG first if your browser refuses.

Are the original EXIF tags preserved?

No. Re-encoding through the Canvas API drops EXIF metadata, including GPS coordinates, camera identifiers, and capture timestamps. The output file is a clean re-encode of the pixels with no original metadata block.

How large can an image be?

Practical limits depend on device memory. Most modern laptops handle 40 to 60 megapixel sources comfortably. Phones manage 20 to 30 megapixels. The browser tab may stall briefly while decoding very large files.

Does converting from PNG to JPEG lose transparency?

Yes. JPEG has no alpha channel. Transparent pixels are flattened against a background color, usually white. Convert to WebP instead when transparency matters and you still need compression.

Why does compression sometimes make a file larger?

Already-optimized photos and very small images have little redundancy left. The re-encode adds its own headers and quantization tables that can exceed the original size. Try a lower quality setting or accept the source as final.

Can I batch process many images at once?

The current tools are designed for one file at a time. Loading them into a single Canvas keeps memory predictable. For repeating the same job across hundreds of images, a desktop script using something like ImageMagick remains the better fit.

Do the tools work offline?

Yes, after the first visit. The pages are static, so once your browser has cached the JavaScript bundle, every image tool runs without an internet connection.

Complete guide to image tools

What are image tools?

Image tools are utilities that decode a raster image, transform the pixels or container, and encode a new file. The category covers compression for upload limits, resizing for social platforms, format conversion between JPEG, PNG, and WebP, plus rotation, cropping, color sampling, and asset generation.

When to use them

Reach for an image tool whenever a file does not fit a target. The most common cases:

A job application portal caps photo uploads at 100 KB and a phone photo lands at 4 MB.
A social platform wants a 1080 by 1080 square and the source is a wide landscape.
A static site bundles WebP for browsers that support it and falls back to JPEG.
A documentation screenshot needs a transparent corner removed before publishing.
A new site needs favicons in six sizes from a single 1024 by 1024 logo.

Browser-based versus server-based

Image processing happens in two places: on a remote server after upload, or directly in your browser using the Canvas API. Both work; the right pick depends on file size, frequency, and how sensitive the source material is.

Browser-based processing skips the upload round trip. A 10 MB photo over a typical home connection takes 15 to 30 seconds to send. The same compression handled locally finishes in well under a second because there is no network at all. EXIF metadata stays inside the tab, which matters for personal photos that carry GPS coordinates and camera identifiers.

Server-side services come into their own for batch workloads, very large source files that exceed device memory, or specialized pipelines such as AI upscaling that need GPU clusters. For one-off jobs at consumer file sizes, the browser path is usually faster and simpler.

Tool comparison

Tool	Primary use	Formats / options
Compress image	Reduce file size	JPEG, PNG, WebP in. JPEG out
Resize image	Change pixel dimensions	JPEG, PNG, WebP. Platform presets
Convert image	Switch between formats	JPEG, PNG, WebP both directions
Rotate & flip	Fix orientation	90, 180, 270 degrees. Horizontal flip
Crop image	Trim or reshape	Rectangle, square, circle
Image to Base64	Embed in HTML or CSS	Data URI output
Image color picker	Sample a color	Hex, RGB, HSL output
Favicon generator	Build icon set	16, 32, 48, 64, 192, 512 PNG

Common workflows

A few sequences cover most needs.

Prepare a photo for a job application. Start with image crop to frame the headshot, then resize down to the required pixel size, and finish with compress image to fit the 100 KB or 200 KB cap.

Build a website launch kit. Run the source logo through favicon generator for the icon set, then convert the hero image with image convert to WebP for modern browsers, and keep the JPEG fallback from compress image.

Sample design colors from a screenshot. Use image color picker to extract a hex code, paste it into color palette generator, and verify contrast with contrast checker.

Format primer: JPEG, PNG, WebP

JPEG uses lossy compression tuned for photographs. Quality settings between 70 and 85 give files roughly five to ten times smaller than PNG with no visible loss at normal viewing sizes. JPEG has no alpha channel.

PNG uses lossless compression and supports transparency. It is the right pick for screenshots, line art, logos, and any image where pixel-perfect fidelity matters. File sizes for photographs are large.

WebP offers both lossy and lossless modes plus alpha. Typical savings over JPEG range from 25 to 35 percent at equivalent visual quality. Every major browser released after 2020 supports WebP, so the legacy compatibility gap has effectively closed.

Frequently asked questions

What counts as an image tool?: Any utility that reads, modifies, or re-encodes a raster image. The category covers compression, resizing, cropping, rotation, format conversion, color sampling, and asset generation such as favicons.
Which formats do these tools accept?: JPEG, PNG, and WebP are universally supported. GIF input works for the Image to PDF tool. HEIC files from iPhones are accepted by some browsers when the OS provides a decoder; convert to JPEG first if your browser refuses.
Are the original EXIF tags preserved?: No. Re-encoding through the Canvas API drops EXIF metadata, including GPS coordinates, camera identifiers, and capture timestamps. The output file is a clean re-encode of the pixels with no original metadata block.
How large can an image be?: Practical limits depend on device memory. Most modern laptops handle 40 to 60 megapixel sources comfortably. Phones manage 20 to 30 megapixels. The browser tab may stall briefly while decoding very large files.
Does converting from PNG to JPEG lose transparency?: Yes. JPEG has no alpha channel. Transparent pixels are flattened against a background color, usually white. Convert to WebP instead when transparency matters and you still need compression.
Why does compression sometimes make a file larger?: Already-optimized photos and very small images have little redundancy left. The re-encode adds its own headers and quantization tables that can exceed the original size. Try a lower quality setting or accept the source as final.
Can I batch process many images at once?: The current tools are designed for one file at a time. Loading them into a single Canvas keeps memory predictable. For repeating the same job across hundreds of images, a desktop script using something like ImageMagick remains the better fit.
Do the tools work offline?: Yes, after the first visit. The pages are static, so once your browser has cached the JavaScript bundle, every image tool runs without an internet connection.

Related concepts

Canvas API powers every image tool here.
EXIF metadata explains why GPS and camera tags disappear after re-encoding.
Alpha channel covers transparency support across formats.
PDF tools guide shares the same browser-side model for document workflows.
Color tools guide pairs with image color picking and palette work.

Reviewed and tested May 25, 2026.