Use case
Forms, portals, applications
Application portals love hard caps: “photo below 50 KB”, “signature below 20 KB”, “scan under 500 KB”. Hit them honestly, in your browser — a 50 KB target is preselected below, and no file of yours is ever uploaded while you do it.
Target size
Resize pixels (optional)
Aspect ratio is always preserved. Leave blank to keep the original pixels.
Drop images here
JPG · PNG · WebP — up to 24 files per batch
Passing a portal check, without guesswork
Match the stated pixel size first. If a form asks for specific dimensions, crop or cap the image to those pixels before compressing — the dimension limiter enforces exact widths while the engine hunts the best quality under your KB target.
Read the result card. Target met means the cap is genuinely passed with the measured bytes. Best effort means that at this image’s detail level the cap is beyond honest reach — the card says what was achieved and why, so you can crop tighter, scan cleaner or pick a smaller source area.
Keep scans honest. Compress from a level scan (300 dpi at document size), not a photo-of-a-photo. JPEG survives detail in the original; it cannot invent it back.
Need the whole document smaller, not just its cover image? The PDF compressor takes entire scanned PDFs towards a KB target, and the PDF to JPG tool extracts single pages when a form wants just one.
Document upload questions
My portal says “photo under 50 KB, signature under 20 KB”. How do I comply?
Run the photo through the 50 KB target and the signature through the 20 KB target — each page preselects its limit. The result card tells you whether the cap was genuinely met, at what quality, and whether a resolution step was used.
What dimensions should a portal photo have?
Follow the portal’s stated pixel size when one exists (many exam forms ask for something in the 200×230 to 600×650 range). Where none is stated, a clean passport-style crop in HD width is usually accepted. Our dimension limiter keeps exact pixel sizes while preserving aspect ratio.
My signature scan looks faint after compression — what then?
Signatures are pen strokes; at 10–20 KB the JPEG should stay legible if the scan was high-contrast to begin with. Re-scan at higher contrast and a larger pen stroke, or use our signature pad instead: the PDF-to-JPG and sign tools produce crisp strokes that survive compression.
Are identity documents safe here?
That is the point of this tool. There is no server: your ID scan, application photo or signature is decoded, compressed and saved to disk entirely by your own browser. Close the tab and nothing remains — there is no account, no history, nothing stored anywhere.
Why was my upload rejected even though the file was under the cap?
Portals check more than bytes: pixel dimensions, aspect ratio, file format, and whether the image is still readable at 100% zoom. The result card reports the size, the format and the state, so you can confirm all of them before you submit.
Should I crop or compress first?
Crop first, then compress. Cropping to the portal’s pixel size before compressing keeps the detail you paid bytes for; compressing first and cropping afterwards throws some of it away.