Compress Image to 80KB — Free, Fast & Private
80 KB is the number a postgraduate medical applicant meets three times in one sitting. The NEET-PG 2026 bulletin from NBEMS sets the same limit — less than 80 KB — on the photograph, on the signature and on the left thumb impression. It sets no floor and, for the photograph, no pixel size. That makes 80 KB unusually forgiving as a byte target, and unusually strict about what is in the picture.
What fits in 80 KB — measured on this page
We dropped five real files on the compressor above and kept what it handed back. 5 of 5 came out under 80 KB; one was made smaller in pixels to get there, because past a point the bytes can only come from pixels.
| File | Before | After, on this page | Under 80 KB? |
|---|---|---|---|
| 12 MP phone photo | 4032 × 3024 px · 3.73 MB | 2580 × 1935 px · 67.2 KB | Yes |
| Portrait / headshot | 3264 × 4653 px · 2.25 MB | 3264 × 4653 px · 74.2 KB | Yes |
| Scanned handwritten page | 3349 × 4281 px · 2.17 MB | 3349 × 4281 px · 77.2 KB | Yes |
| Scanned signature | 2041 × 617 px · 109.1 KB | 2041 × 617 px · 61.8 KB | Yes |
| Screenshot (PNG) | 1280 × 800 px · 88.1 KB | 1280 × 800 px · 68.3 KB | Yes |
Measured 2026-10-06 in Chromium 145.0.7632.6 with this page’s own settings. The photos are public-domain and CC0 files from Wikimedia Commons; the screenshot is our own. Sizes read as the tool shows them (1 KB = 1,024 bytes); the target itself is 80,000 bytes, which is under 80 KB on either reading.
| File | Size | What the bulletin adds |
|---|---|---|
| Photograph | less than 80 KB | Face takes up at least 70–80% of the frame |
| Signature | less than 80 KB | Sign inside a box 1.5 cm (height) × 3.5 cm (width) |
| Left thumb impression | less than 80 KB | 3.5 × 1.5 cm box, scanned at 200 dpi |
“Less than 80 KB” is not the same as “80 KB”
Read the bulletin’s own words: “The size of image should be less than 80kb.” Less than. A file of exactly 80 KB is, on that wording, one byte too many. This page’s compressor stops at 80,000 bytes or under, so the one result that would fit the tool but not the sentence is a file that lands on 80,000 bytes exactly. The size MiniPx shows counts 1,024 bytes to the kilobyte, so an 80,000-byte file reads as 78.1 KB there and the exact boundary is easy to miss. To stay clear of it, use the dedicated NEET-PG upload page for NEET-PG files: it reads “less than 80 KB” as a ceiling of 79,999 bytes and aims under that.
There is a second ambiguity the bulletin does not settle: whether its kilobyte is 1,000 bytes or 1,024. MiniPx counts 1 KB as 1,000 bytes everywhere on this page. That is the stricter reading — 80 × 1,000 = 80,000 bytes is smaller than 80 × 1,024 = 81,920 — so a file under the first is under the second as well.
The thumb box, worked out in pixels
The thumb impression is the one file the bulletin describes physically: a 3.5 × 1.5 cm box, scanned at 200 dpi. Turn that into pixels and the size limit starts to make sense. 3.5 cm ÷ 2.54 × 200 is about 276 pixels wide; 1.5 cm ÷ 2.54 × 200 is about 118 tall. That is 32,568 pixels, and 80,000 bytes spread over them is about 2.46 bytes per pixel.
For scale, an uncompressed colour pixel takes 3 bytes. So at the bulletin’s own scan resolution, 80 KB is nearly enough room to store the box with no compression at all. The cap only bites because almost nobody uploads the box at 200 dpi. They photograph the thumbprint with a phone.
Take a 4,000 × 3,000 phone frame: 12,000,000 pixels, about 368 times the box. 80,000 bytes over that frame is about 0.0067 bytes per pixel — a budget at which fine ridge detail cannot survive at full size. This is where the tool’s order of work matters. It lowers JPEG quality first, keeping every pixel; only if the lowest quality still misses 80 KB does it reduce the pixel dimensions, and when it does, it tells you and shows the new size. For a thumbprint you are better off making that decision yourself: crop to the inked area first, so the pixels you keep are ridges rather than the table it was pressed on.
What not to do to the photograph
NEET-PG is stricter about the content of the photograph than about its size. The bulletin’s rules for it, as MiniPx records them:
- Face takes up at least 70–80% of the frame
- A real-time webcam photograph is ALSO taken during the application
- Selfies shall be rejected — ask someone else to take the picture
- Digital enhancement or other alterations or retouching are not permitted
Two of those shape how you should use a compressor. First, do not retouch: no smoothing, no brightening filter, no background replacement. Compression changes how the file is stored, not what the face looks like, and that is all this page does. Second, the selfie rule is about how the photo was taken, so no tool can fix it afterwards — ask someone else to take the picture before you start. And because a live webcam photograph is also taken during the application, the uploaded photograph is not the only image of you the form holds; an uploaded photo that does not resemble you is a problem no file size can solve.
The face-fill rule matters for compression too. If the face takes up most of the frame, most of your 80,000 bytes are spent on the face. A wide shot with a face in the middle spends them on the wall behind you, and when the tool has to reduce pixels to fit, the face shrinks with everything else.
When the result looks wrong
The signature came back grey and speckled. Signatures are hard edges, and JPEG damages edges first when quality drops. The bulletin asks for the signature inside a 3.5 × 1.5 cm box in black or dark blue ink; crop to that box before compressing and the tool has far fewer pixels to fit, so it can keep the quality higher.
The thumbprint came back as a dark smudge. Ridges are fine, closely spaced lines, and they are the first detail to merge when a large photo is squeezed hard. The cause is nearly always the source, not the target: too much of the frame is table, or the ink was pressed too heavily and the ridges had already merged on paper. Press the thumb once, lightly, on plain white paper; photograph it in daylight from directly above; crop to the 3.5 × 1.5 cm box. With the box worked out above at about 276 × 118 pixels, the budget per pixel is generous, and the ridges have room to survive.
The file was already under 80 KB and nothing changed. That is deliberate. If your JPEG already measures 80,000 bytes or less, the tool hands back the original rather than re-encoding it and losing detail for nothing.
The tool said it reduced the dimensions. It could not reach 80 KB at the lowest quality at full size. With no pixel rule on the NEET-PG photograph that is usually harmless, but check the face is still sharp, and crop tighter if it is not.
Everything on this page runs in your browser — your photograph, signature and thumbprint are never uploaded to a server. For other exact targets see the 50KB and 100KB pages, and for a passport-style photo with a set background, the passport photo maker.
For a window below 100KB, see compress image between 50KB and 100KB.