Compress image to 200 KB
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Process 1–10 images, one at a time. Up to 20 MB per image and 100 MB total. Files stay on this device.
Nothing is uploaded or saved by the app. Results remain in memory until cleared or the page closes.
Less weight. Same job.
Choose a photo or scan, set the file-size limit of your form, then download the result. The original is never changed.
Does my image get uploaded?
Images are processed in this browser, without image uploads, ads or analytics. Your language choice is stored locally. Public site files are saved only if you enable offline use; selected images and results are not saved.
What should I know?
One JPG, PNG or WebP. Choose JPG or supported WebP for a KB target; PNG optimization accepts PNG only, preserves pixels and has no KB target. PNG: up to 8 MP, 16,384 pixels per side and 64 MB decoded scanlines. Batch: 1–10 files, 20 MB each, 100 MB total. A verified basic HEIC opens in Safari, which decodes it natively; Chrome and Firefox cannot open HEIC. HDR, animation, unusual orientation and unsupported colour profiles are refused. Optional batch does not accept HEIC. GIF and SVG are unsupported.
What 200 KB does to a photo, and to a UPSC photo
With Allow shrinking ticked, all 25 of our photos fit 200 KB, and 15 were made smaller in pixels. With it unticked, 10 of 25 fit at full size. The UPSC photo may be 20 to 200 KB, so we ran its 6 portraits two ways: straight in, and resized to 1200 px wide first.
Photos at 200 KB with Allow shrinking ticked, by kind
| Kind | Photos | Made smaller in pixels | Long side after (px): smallest, median, largest | Similarity: median, lowest | Fit with shrinking off |
|---|---|---|---|---|---|
| Portraits | 6 | 3/6 | 2,136, 2,340, 4,190 | 0.953, 0.893 | 3/6 |
| Landscapes | 4 | 2/4 | 1,798, 3,009, 5,184 | 0.963, 0.945 | 2/4 |
| Night shots | 5 | 3/5 | 1,596, 1,741, 8,632 | 0.956, 0.858 | 2/5 |
| Close-up textures | 4 | 4/4 | 1,324, 1,390, 1,833 | 0.915, 0.905 | 0/4 |
| Food and products | 6 | 3/6 | 2,109, 2,392, 3,000 | 0.956, 0.919 | 3/6 |
Night shots lost the most: the lowest score was 0.858, for a photo cut to 1617 × 1013.
Source: our test on 2026-11-10 (harness eacd79c, site code eacd79c), headless Chromium 145 on a desktop Mac, 25 CC0 photos. Similarity is our own 8×8-block luma score (SSIM): 1.000 means no visible change. How we test
UPSC photo at 200 KB: straight in, or resized first
| Photo | Original | Straight in: pixels, quality | Resized to 1200 px wide first: pixels, quality |
|---|---|---|---|
| Portrait 1 | 4190 × 2782 | 4190 × 2782, 0.65 | 1200 × 797, 0.92 |
| Portrait 2 | 3331 × 2221 | 2277 × 1518, 0.43 | 1200 × 800, 0.87 |
| Portrait 3 | 2136 × 1536 | 2136 × 1536, 0.62 | 1200 × 863, 0.92 |
| Portrait 4 | 2592 × 1933 | 2592 × 1933, 0.82 | 1200 × 895, 0.92 |
| Portrait 5 | 3464 × 2309 | 2370 × 1580, 0.43 | 1200 × 800, 0.90 |
| Portrait 6 | 2034 × 2717 | 1729 × 2309, 0.48 | 1200 × 1603, 0.79 |
Quality is the JPG quality the compressor chose, from 0.92 down. All files from both routes were between 20 and 200 KB.
Source: our test on 2026-11-10 (harness eacd79c, site code eacd79c), headless Chromium 145 on a desktop Mac, 6 CC0 photos. How we test
How to prepare a photo for 200 KB
- UPSC wants the face to cover about 75% of the photo, on a plain white background. Crop the photo to that first.
- Resize it to about 1200 px wide with Keep aspect ratio ticked. In our test this kept the JPG quality higher.
- Add one JPG, PNG or WebP image above (or a HEIC in Safari). The target is 200 KB. Leave Allow shrinking ticked.
- Press Compress image. The size under the result must be at least 20,480 bytes and at most 200,000 bytes.
- Download and upload it.
When 200 KB goes wrong
My UPSC photo looks soft at 200 KB.
Straight in, the compressor lowers the JPG quality first and shrinks the pixels only when quality runs out. Our portraits went as low as quality 0.43. Resized to 1200 px wide first, the lowest was 0.79, with fewer pixels in a file that still fit.
The portal says my photo is under 20 KB.
None of ours were: the smallest at 1200 px wide was 52,559 bytes. If yours is, remember the compressor cannot add bytes. Use the converter at a higher JPG quality, then check the size again.
My notice allows up to 300 KB.
The Engineering Services notice of 2026-09-16 allows 20 to 300 KB for the photo and the signature. Type 300 as the target. In our test 6 of 6 portraits landed in that range.
With Allow shrinking off, the target is missed.
At full size only 10 of our 25 photos fit 200 KB; the rest came out at a median 268.4 KB. The table shows which kinds fit. Tick Allow shrinking, or resize first.
Is 200 KB the same as 204,800 bytes?
Our compressor counts 1,000 bytes as one KB. None of the official pages above says whether a KB is 1,000 or 1,024 bytes. A target of 200 KB gives at most 200,000 bytes, which is under the cap either way. The minimum is the risk: if the portal counts 1,024 bytes, a 20 KB minimum needs at least 20,480 bytes, so check the size under the result.
The official rules
From the official pages, with the date each one shows. An archived page was not reachable from our test machine, so we read a saved copy.
| Rule | Value | Source | Date |
|---|---|---|---|
| UPSC: photograph file size and format | 20-200 KB | UPSC: Instructions for Uploading the Photo & Signature, archived: copy saved 2026-07-29 | no date shown; read 2026-11-09 |
| UPSC: photograph face coverage | 75 % of photo area | UPSC: Instructions for Uploading the Photo & Signature, archived: copy saved 2026-07-29 | no date shown; read 2026-11-09 |
| UPSC: photograph background | plain white | UPSC: Instructions for Uploading the Photo & Signature, archived: copy saved 2026-07-29 | no date shown; read 2026-11-09 |
| UPSC: live photograph | mandatory; matched with uploaded photo | UPSC: Instructions for Uploading the Photo & Signature, archived: copy saved 2026-07-29 | no date shown; read 2026-11-09 |
| UPSC: photograph and signature file size | 20-300 KB | UPSC Examination Notice No. 02/2027-ENGG: Engineering Services Examination, 2027 | 2026-09-16 |
Other pages for this job: Compress image to 100 KB · Compress image for email · Compress image · Resize first or compress?