Compress Image to 20KB
Compress image to 20KB in one step: add your photo or signature, and the tool lowers the quality and size until the JPG is under 20KB, the limit many exam and bank forms use.
Output format
Your files are processed on your device and never sent to a server.
How to use Compress Image to 20KB
The target is already set to 20 KB. Change it only if your form gives a different limit (for example 10 KB for some signatures).
Click "Choose images" and pick your photo or scanned signature. On a phone you can pick straight from the gallery.
Click "Compress". When you see the green "Under 20 KB" tick, tap "Download" and upload that file to the form.
When to use Compress Image to 20KB
- SSC and railway forms. Staff Selection Commission and RRB applications have used photo limits of around 20KB to 50KB and signature limits of 10KB to 20KB.
- Bank exam signatures. IBPS and SBI forms ask for a signature of 10KB to 20KB, so 20KB is the usual upper limit.
- State commission forms. TNPSC and other state commissions often set a 20KB to 50KB range for the photo.
- Scholarship and hostel forms. Many smaller portals accept only very small images and simply say "less than 20KB".
Typical pixel sizes that fit in 20KB
A 20KB JPG cannot hold a full phone photo. Forms that use this limit expect a small passport-style image, so the dimensions matter as much as the file size.
| What you are uploading | Common size | Fits in 20KB? |
|---|---|---|
| Passport-style photo for exams | 200 x 230 px (about 3.5 x 4.5 cm) | Yes, at good quality |
| Signature | 140 x 60 px | Yes, usually under 10KB |
| Photo at 413 x 531 px (35 x 45 mm at 300 DPI) | 413 x 531 px | Yes, at medium quality |
| Full phone photo (4000 x 3000 px) | 4000 x 3000 px | Only after strong resizing |
Always check the size given in your own notification. The tool tells you the final width and height of every file.
Tips to keep a 20KB photo sharp
- Crop to the face and shoulders first with Image Crop. Fewer pixels means more quality for the face.
- Use a plain, light background. Busy backgrounds eat up the 20KB budget.
- Take the photo in daylight. Noise from dark photos makes compression look blotchy.
- For signatures, use the Signature Resizer, which whitens the paper and boosts the ink first.
Limits and privacy
- Up to 50 images at once, 25MB each. JPG, PNG, WebP, AVIF.
- Output is JPG by default because almost every form accepts it. WebP is available but often rejected by government portals.
- If a photo cannot reach 20KB without becoming very small, the result is marked in red. Click "Also reduce dimensions" to fix it in one click.
- Location and camera data are removed from the result.
- Images are decoded and re-encoded by your browser using the canvas API. Nothing is sent to a server, and closing the tab clears everything.
Frequently asked questions
How do I reduce a photo to 20KB?
Open this page, keep the target at 20 KB, choose your photo and click Compress. The tool tries lower JPG quality first and then smaller dimensions until the file is just under 20KB. The new size and the pixel dimensions appear under the file name, with a green tick when it is under the limit.
How do I compress a photo to 20KB on mobile?
This page works in Chrome, Safari and other mobile browsers without installing an app. Tap "Choose images", pick the photo from your gallery or files, tap Compress, then Download. On Android the file goes to Downloads; on iPhone tap Download and choose "Save to Files" or share it straight to the form.
Will a 20KB photo be blurry?
Not if the photo is small, such as 200 x 230 pixels, which is what most exam forms want. A large photo squeezed to 20KB will look soft, so the tool reduces the dimensions rather than crushing the quality. Cropping close to your face before compressing gives the sharpest result.
Which forms ask for this size?
Exam and recruitment forms are the most common: SSC, RRB, IBPS and many state public service commissions have used 20KB to 50KB for photos and 10KB to 20KB for signatures. Limits change with each notification, so always confirm the exact numbers in the official notice before you upload.
Are my photos sent to a server?
No. Your photo is compressed inside your browser and never leaves your phone or computer. That matters for identity photos and signatures, which you should not hand to unknown websites.
Step-by-step guides
- How to Compress a Photo to 20KB for Online FormsCompress a photo to 20KB (or 50KB) for exam and job forms without losing clarity: crop, resize to the right pixels, then compress. Free, on phone or PC.
- SSC Photo and Signature Size 2026 (KB and Pixels)SSC photo and signature size for CGL, CHSL, MTS and GD forms: KB limits, pixels, background rules and how to resize them free. Checked 15 October 2026.
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