Category
Image
Seven image tools built on the browser's own canvas. Shrink a photo before emailing it, resize to exact pixel dimensions, crop to a fixed ratio, build a favicon set, lay out a passport photo sheet, or generate a QR code. A twenty-megabyte photo never leaves your machine.
All Image tools6 tools
Compression without the quality cliff
Most size problems are resolution problems. A photo straight off a phone is often 4000 pixels wide when the thing it is going into is 1200 pixels wide, so resizing first and compressing second usually beats compressing hard at full size. Image Compressor shows the before-and-after byte count live as you move the quality slider, so you can find the point where the file is small enough and the picture still looks right rather than guessing at a percentage. It also converts between JPEG, PNG, and WebP, and WebP typically lands 25 to 35 percent smaller than JPEG at matching quality.
Getting exact dimensions
Image Resizer takes exact pixel values and can lock the aspect ratio so you cannot accidentally stretch a face. Image Cropper snaps to common ratios (1:1, 4:3, 16:9) or to numbers you type. Passport Size Photo Maker handles the arithmetic that trips people up: 35 × 45 mm at 300 DPI is exactly 413 × 531 pixels, and eight of them fit on one 4 × 6 inch sheet. Favicon Generator emits the full set of sizes a site needs rather than a single 32-pixel file.
Frequently asked questions
Are my photos uploaded to a server?
No. Every tool uses the canvas API built into your browser, so the image is decoded, changed, and re-encoded on your own device. Nothing is transmitted, stored, or logged, and the tools work with the network disconnected.
Which formats are supported?
JPEG, PNG, WebP, and GIF for input, with JPEG, PNG, and WebP available as output. Converting is a matter of choosing a different output format; no separate converter is needed.
Will resizing reduce quality?
Making an image smaller is close to lossless in visible terms, because you are discarding detail the new size cannot show anyway. Making one larger cannot invent detail that was never captured, so enlarging past the original size will always look softer.