Image Tools
Thirty ways to compress, resize, crop, edit and convert images locally with the Canvas API.
Core tools 10 tools
- 01
Image Compressor
Shrink JPEG, PNG and WebP files with a live quality slider and size comparison.
- 02
Image Resizer & Cropper
Resize to exact dimensions or drag a crop selection, with aspect-ratio locking.
- 03
Image Format Converter
Convert between PNG, JPG and WebP without uploading anything.
- 04
Image & Base64 Converter
Encode an image as a Base64 data URI, or decode a data URI back to a file.
- 05
Image Colour Picker
Pick exact colours from any image and copy them as HEX, RGB or HSL.
- 06
Meme Generator
Add classic top and bottom captions to any image and download the result.
- 07
Image Watermark Adder
Stamp text or a logo onto an image, with position, opacity and tiling options.
- 08
Favicon Generator
Generate every favicon size a site needs, plus the HTML to link them.
- 09
SVG to PNG Converter
Rasterise SVG markup or files to PNG at any resolution you choose.
- 10
Image Metadata (EXIF) Viewer
Read the camera, date and GPS data hidden inside a photo — privately.
Editing & effects 7 tools
- 11
Image Rotator & Flipper
Rotate by 90°, 180° or any angle, and flip horizontally or vertically.
- 12
Grayscale & Black-and-White Converter
Convert to greyscale with four different methods, or to pure black and white.
- 13
Image Filter Editor
Adjust brightness, contrast, saturation, hue, blur and sepia with live sliders.
- 14
Image Pixelator & Mosaic Effect
Turn an image into blocks, either wholesale or as a mosaic art effect.
- 15
Image Sharpen Tool
Recover apparent detail with unsharp masking and an adjustable radius.
- 16
Duotone & Colour Overlay Generator
Map an image's tones onto two brand colours, or wash it with a single tint.
- 17
Privacy Blur Tool
Drag over faces, plates or personal data and blur, pixelate or black them out.
Cropping & framing 5 tools
- 18
Circular Crop & Avatar Maker
Crop to a perfect circle with an adjustable ring, ready for a profile picture.
- 19
Rounded Corner Generator
Round an image's corners by any radius, with per-corner control and CSS output.
- 20
Image Border & Frame Adder
Add a solid, gradient or polaroid-style frame around an image.
- 21
Photo Grid Splitter
Cut one image into a 3×3 or custom grid for carousel and feed posts.
- 22
Image Collage Maker
Combine several images into a grid, strip or mosaic with adjustable spacing.
Conversion & format 4 tools
- 23
Image to PDF Converter
Combine images into a single PDF with page size, orientation and margins.
- 24
GIF Frame Extractor & Builder
Split an animated GIF into frames, or build one from a set of images.
- 25
Image to ASCII Art Converter
Turn a photo into text art, with adjustable width, character set and colour.
- 26
Sprite Sheet Generator
Pack images into one sheet and get the CSS background positions to match.
Utility 4 tools
- 27
Placeholder Image Generator
Make blank sized images with dimension labels for mockups and testing.
- 28
Batch Image Renamer
Rename many images at once with a pattern, then download them as a ZIP.
- 29
Image DPI & Print Size Calculator
Convert between pixel dimensions, DPI and real-world print size.
- 30
Before/After Compare Slider Generator
Turn two images into a self-contained draggable comparison widget.
About these image tools
Most online image tools work by uploading your photo to somebody else's server, processing it there and handing back a link. These do not. Every tool on this page uses the HTML Canvas and File APIs, which means the image is decoded, edited and re-encoded inside your own browser. Drag a file in, do the work, save the result — the picture never leaves your device, so screenshots of internal dashboards, photos of documents and client artwork stay private by construction. The thirty tools below are grouped by job: the everyday core set, editing and effects, cropping and framing, conversion between formats, and a handful of utilities for people who work with images in bulk.
Every tool has its own page, its own explanation and its own worked example, so you can bookmark the one you use most instead of hunting through a tab bar. They all work offline once the page has loaded, they all work on a phone, and none of them ask you to create an account or wait in a queue.
Other categories
Text & Writing Tools
Clean up, count, convert and reshape text without leaving your browser.
Developer Tools
Formatters, generators and testers for everyday front-end and back-end work.
Calculators
Practical calculators for age, passwords, typing speed, loans and screens.
SEO Tools
Audit, preview and generate the on-page and technical pieces of SEO.