Compress Image to 20 KB Online
Get any JPG, PNG or WebP down to 20 KB in one step — the size exam and job application portals most often ask for. The tool automatically finds the best quality that fits, on your phone or computer.
Choose your file
Pick a quality mode
Compress
Download
Need a different size?
Using an iPhone? Convert HEIC to JPG under 20 KB in the same step.
The 20 KB limit on exam and job portals
20 KB is probably the most-searched image size in India, and for good reason: government exam portals — SSC, banking, railway and state recruitment boards among them — commonly cap signature uploads around 10–20 KB and photographs around 20–50 KB. College admission forms and scholarship portals often reuse the same limits. The portals reject anything over the cap, usually with an unhelpful error, right when you are trying to submit before a deadline.
A photo straight from a phone camera is 100–250× larger than that. This page removes the guesswork: the compressor is locked to a 20 KB budget, so whatever you upload comes back at or under the limit with the most detail that fits.
How it hits 20 KB without ruining your photo
Compressing to an exact size is a balancing act between three levers: pixel dimensions, JPG quality, and format. Move only one and you either overshoot the size or destroy the image. Our planner works the levers together — it prefers keeping quality high and scales dimensions just enough, then the server encodes, measures the actual bytes, and refines until the output genuinely fits. You see the predicted result before anything uploads.
For a passport-style photo, that typically means a file a few hundred pixels wide at solid JPG quality — sharp enough for the portal preview and the printed admit card. If your form specifies exact pixel dimensions (many ask for roughly 3.5 × 4.5 cm photos, often quoted as around 200 × 230 pixels), resize to those first with the image resizer, then compress here.
Photo or signature? Pick the right target
Read the field label on your form carefully — photo and signature fields usually have different caps. Signatures are commonly 10–20 KB: this page handles the 20 KB case, and compress image to 10 KB covers the tighter one. Photographs are commonly 20–50 KB, so if your portal allows more room, compress image to 50 KB will keep noticeably more detail.
JPG is the default output here because nearly every portal expects it. PNG is available too — mainly useful for clean scanned signatures, where its lossless flat-colour compression can beat JPG at small sizes.
Works on your phone, free, no strings
Most people fill these forms on a phone, so this page is built mobile-first: pick the file from your gallery or camera, one tap to compress, one tap to download. No signup, no watermark, no “premium” upsell — the free tool is the whole tool.
Your image is processed privately and deleted from our servers automatically within 24 hours. If you just want a smaller photo without a fixed byte cap — say for WhatsApp or email — the general-purpose image compressor with quality presets is the better fit.
Three steps, no account
Choose your photo or signature
Upload a JPG, PNG or WebP from your phone gallery, camera or computer — up to 100 MB.
Compress to 20 KB automatically
The planner picks the best dimensions and quality, then verifies the real output is at or under 20 KB.
Download for your form
Grab the finished JPG (or PNG) and upload it straight to the photo or signature field.
Frequently asked questions
How can I compress a photo to 20 KB for an exam application form?
Upload the photo on this page — the target is already locked to 20 KB. Press Compress and the tool automatically balances dimensions and quality to fit under the limit, then download the result and upload it to the form. It works directly on a phone.
Which portals ask for 20 KB images?
Signature and photo fields capped around 20 KB are common on Indian government recruitment portals (SSC, banking, railway and state boards), college admission forms and scholarship sites. Always check your own form’s instructions — limits vary between forms and change over time.
Will a 20 KB photo look OK on my admit card?
Yes, for the sizes portals display and print. 20 KB comfortably holds a passport-style photo a few hundred pixels wide at good JPG quality — which is what admit cards actually use. It will not hold a full-resolution phone photo, so expect the dimensions to shrink.
Do I need to resize my photo before compressing it to 20 KB?
Usually no — the tool shrinks dimensions automatically as needed. Resize first only when your form demands exact pixel dimensions; do that in the image resizer, then compress here so both the dimensions and the file size come out right.
Does compressing to 20 KB remove EXIF data from my photo?
Yes. Metadata such as camera details and GPS location is stripped by default, which both protects your privacy and saves precious bytes for actual image detail.
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