What the image tools cover
Most image chores before an upload are covered here: resize to exact pixel dimensions, compress to a target quality, convert between JPG, PNG and WebP, rotate or flip, sharpen, denoise, apply greyscale, sepia and sketch effects, and encode an image as Base64 or decode one back. The social presets (Instagram, Facebook cover, YouTube thumbnail and others) carry the current pixel dimensions and safe zones for each platform. The bulk resizer processes up to 60 files in one run.
The newer tools cover the editing jobs that used to need a desktop app: crop to a ratio or exact box, circle-crop an avatar, round the corners, add a border, write text on a picture or make a meme, extract a colour palette, turn a photo into ASCII art, build every favicon size from one logo, knock out a flat background, read or strip EXIF and GPS data, pixelate, blur, split into a grid, adjust brightness and contrast, invert, change the DPI for print, and generate placeholders for layouts.
Processing happens on a canvas in your browser, so the photo never leaves your device and there is no upload to wait for. The trade-off is that every save through a canvas re-encodes the image. For a lossy format such as JPEG that always costs some detail, even at the highest quality setting, and EXIF metadata (camera model, GPS position) is dropped. Dropping it is usually what you want before posting a photo publicly.
Choosing a format
- Photographs: JPEG or WebP. WebP is usually 25 to 35 percent smaller at the same visible quality.
- Screenshots, logos, anything with hard edges or transparency: PNG.
- Icons and diagrams you may need at several sizes: keep the SVG and rasterise only the copy you upload.