Resize a photo or signature to an exact pixel size and file-size range for any form or exam. Nothing ever leaves your browser.
A photo and signature resizer crops a photo or scanned signature to an exact pixel size and squeezes the file into a specific byte-size range โ the two requirements almost every online form, job application, or exam portal asks for, usually in the same breath ("photo: 200ร230px, 20-50KB").
This one does both at once, entirely in your browser: set a target width and height in pixels, centimeters, millimeters, or inches (plus a DPI if you're working in a physical unit), set a minimum and maximum file size, and it crops, compresses, and โ if quality alone can't hit the target โ scales the image down a little at a time until the result lands inside your size range.
The target size is converted to pixels using your chosen DPI (cm/mm/inch forms rarely specify DPI explicitly, so 300 โ the print-industry standard โ is the default, and you can change it). The crop tool locks itself to that exact width/height ratio once both are set, so what you frame is already the right shape.
Hitting an exact file-size RANGE (not just "under X") is the tricky part most tools skip: this binary-searches JPEG quality first since that's the gentlest way to shrink a file, and only reduces the actual pixel dimensions if quality alone genuinely can't fit under your maximum โ keeping as much real detail as possible for as long as possible.
Signature mode's "remove paper background" is a fast pixel-brightness threshold (no AI, instant); Photo mode's background removal uses an on-device AI model that identifies the subject automatically. Auto-trim scans for the bounding box of actual ink/content and crops the empty paper margin away. All of it โ reading the file, cropping, compressing, converting HEIC โ happens on your device; nothing is ever uploaded.
A signature photographed on a full sheet of paper, target 10-20 KB:
No โ cropping, background removal, HEIC conversion, and compression all run locally in your browser using Canvas and WebAssembly. Nothing is ever sent anywhere.
If the image is already small at full quality, there's no real detail left to add back in โ the tool uses the best quality it can and flags this clearly rather than padding the file artificially.
Yes โ switch to Signature mode, which swaps in paper-background removal, ink darkening, and auto-trim instead of the photo-specific background/brightness/contrast tools.
Yes โ HEIC files are automatically converted to JPEG the moment you upload them, entirely in your browser, before anything else happens.
Yes โ the Exam Photo Resizer has ready-made presets (size, file-size range, and format) for dozens of exams, so you don't have to look up the numbers yourself.