Resize image to 20 KB
Add an image and download a JPG under 20 KB, with a minimum if your form sets one. The tool keeps your proportions and chooses the pixel size and quality, or uses the exact pixels your form asks for. In the notices listed below, 20 KB is the maximum for a signature but the minimum for a photograph, so check which applies to your upload.
Make a JPG under 20 KB
Nothing is uploadedWhere 20 KB is the maximum
These official notices set 20 KB as the largest allowed file. Each exam name links to its FormAssets page for the image files it needs, and each notice link opens the authority's own document.
| Rule | Where it applies |
|---|---|
| Signature140 × 60 px10 to 20 KB |
|
| Signature230 × 75 px, 200 DPI10 to 20 KB |
|
| SignatureAbout 6.0 × 2.0 cm; preset 472 × 157 px at an assumed 200 DPI10 to 20 KB |
|
SSC gives the signature size in centimetres (about 6.0 × 2.0 cm), not pixels, and states no DPI. 472 × 157 px is that size at 200 DPI, an assumption the SSC CHSL page explains.
Where 20 KB is the minimum
- Photograph, 200 × 230 px, 20 to 50 KB: IBPS RRB XV Officers 2026, IBPS RRB XV Office Assistants 2026, RCF Assistant Officer (Secretarial) 2026, India Exim Bank SRD 2026.
- Left thumb impression, 240 × 240 px, 20 to 50 KB: IBPS RRB XV Officers 2026, IBPS RRB XV Office Assistants 2026, RCF Assistant Officer (Secretarial) 2026, India Exim Bank SRD 2026.
- Photograph, 130 × 170 px, 20 to 50 KB: TNPSC One Time Registration.
A file under 20 KB is too small for these. Use the 50 KB page instead.
Other official notices at 20 KB
Taken from each authority's own document on the date shown. Where a rule matches a preset above, use that preset; otherwise enter the numbers yourself.
| Notice and file | Official rule and source |
|---|---|
| SBI Junior Associates (Clerk) 2025Signature | 140 × 60 pixels (preferred), 10 to 20 KBState Bank of India (opens in a new tab) page 9 of 11, Annexure II, read from the archived copy, checked 25 Sept 2026 |
| SBI Probationary Officers 2025Signature | 140 × 60 pixels (preferred), 10 to 20 KBState Bank of India (opens in a new tab) page 14 of 15, read from the archived copy, checked 25 Sept 2026 |
What 20 KB is for.
Signatures for exam and job forms. The IBPS RRB, RCF, India Exim Bank, TNPSC and SSC notices listed above, and SBI's 2025 Clerk and PO notices, set the signature at 10 to 20 KB. IBPS RRB, RCF, India Exim Bank, SBI and TNPSC also give pixel dimensions; SSC gives the size in centimetres. For notices that give pixels, pick the matching preset; the SSC preset converts its centimetre size at an assumed 200 DPI. The signature resizer explains how to keep every stroke inside the frame.
A photo for a form with a 20 KB maximum. If a form's upload page says the photo must be under 20 KB, the Keep proportions, choose for me option reduces the pixel dimensions first. Our sample photo came to 764 × 573 px at JPG quality 73. Open the result and check that the face is still clear.
Any upload with a 20 KB maximum and no pixel rule. When a site gives only a file-size limit, leave Dimensions on Keep proportions. The tool adjusts the pixel size while trying to keep the JPG quality at 72 out of 100 or above, so you do not have to guess the pixels.
What pixels fit in 20 KB?
Unlike the What fits in 20 KB table further down, which includes preset runs with their minimums, each row here is one run of this tool with exact pixels and only the 20 KB maximum set, on computer-generated test images: a pattern of coloured circles standing in for a photo, and a drawn signature. They show the file size common exam pixel sizes produce; your own picture can come out larger or smaller.
| Sample | Pixels | Output | Quality |
|---|---|---|---|
| Photo at IBPS dimensionsinput 285.1 KB | 200 × 230 px | 18.6 KB | 95 / 100 |
| Signature at IBPS dimensionsinput 252.9 KB | 140 × 60 px | 7.4 KB | 100 / 100 |
| Signature at SSC dimensionsinput 252.9 KB | 472 × 157 px | 18.9 KB | 95 / 100 |
Tested on 11 October 2026 by running this page's resizing code in a test script on a computer instead of a browser. A KB in this table is 1,000 bytes. Your image or browser may give different sizes, so treat the table as an example.
File below the minimum?
Because this run set no minimum, the 140 × 60 drawn signature came out below the 10 KB minimum in the IBPS RRB XV notices (the IBPS signature preset sets that minimum), and the 200 × 230 photo below their 20 KB photo minimum. Make IBPS photos on the 50 KB page, whose IBPS preset sets that minimum. Set the minimum in the tool, or use the increase image size tool when the pixels already match.
Compare the neighbouring limits: 10 KB, 15 KB and 30 KB. Choose the one stated by the current upload screen.
Common mistakes with a 20 KB limit.
For many exam photographs, 20 KB is the minimum. The IBPS RRB, RCF, India Exim Bank, SBI and TNPSC photographs listed on the 50 KB page must be 20 to 50 KB; UPSC's photograph is 20 to 200 KB and its signature 20 to 100 KB. A file smaller than 20 KB is outside all of those ranges. Use the 50 KB page for the 20 to 50 KB photographs, the 200 KB page for the UPSC photograph and the 100 KB page for the UPSC signature.
A simple signature can stay under 10 KB even at JPG quality 100. At IBPS's 140 × 60 px, the phone-photographed signature in the What fits in 20 KB table below came to only 6.2 KB at JPG quality 100 before padding, and 8.4 KB at TNPSC's 230 × 75 px. With the minimum set to 10 KB, the tool makes the file larger without changing its pixels and tells you by how much. The larger SSC preset, at 472 × 157 px, came to 18.9 KB without any bytes added.
Our A4 sample became hard to read at 20 KB. The handwritten A4 page had to shrink to 274 × 387 px to fit, and the words were barely legible. For a document, use the 100 KB or 200 KB page if the form allows it.
20 KB can mean 20,000 or 20,480 bytes. A portal may count 1 KB as 1,024 bytes or as 1,000. The tool keeps the file under 20,000 bytes, so it is below the maximum under either count. Your phone or Windows may show it as 19 or 20 KB.
What fits in 20 KB
A signature photographed on a phone came down to 931 × 465 px under 20 KB, while a handwritten A4 page had to shrink to 274 × 387 px and became hard to read. Tested with this tool in Chrome 153 on 25 Sept 2026, using computer-generated samples. Your image or browser may give different results, so treat the table as an example.
| Sample | Pixels | Size and JPG quality (out of 100) |
|---|---|---|
| Signature photographed on a phoneKeep proportions; input 3024 × 1512 px, 892 KB | 931 × 465 px | 18.7 KBquality 72 |
| Uncropped flatbed scan of a signatureKeep proportions; input 2480 × 827 px, 341 KB | 1378 × 460 px | 19.5 KBquality 85 |
| Landscape photo of a personKeep proportions; input 1600 × 1200 px, 501 KB | 764 × 573 px | 19.5 KBquality 73 |
| Handwritten A4 pageKeep proportions; input 1240 × 1754 px, 724 KB | 274 × 387 px | 19.4 KBquality 72 |
| IBPS signature presetExact pixels; input 3024 × 1512 px, 892 KB | 140 × 60 px | 10.0 KBquality 1003.8 KB added to reach the minimum |
| TNPSC signature presetExact pixels; input 3024 × 1512 px, 892 KB | 230 × 75 px | 10.0 KBquality 1001.6 KB added to reach the minimum |
| SSC signature presetExact pixels; input 3024 × 1512 px, 892 KB | 472 × 157 px | 18.9 KBquality 99 |
Resize to a file size.
Pick the limit your form states.
Questions
How do I reduce a photo to 20 KB without it looking blurry?
Let the tool choose the pixel size. A full-resolution phone photo usually needs far fewer pixels to fit in 20 KB without a severe loss of quality, so the tool lowers the pixel count first and tries to keep the JPG quality at 72 out of 100 or above. A smaller sharp image usually looks better than a large blocky one. Check the downloaded file before uploading it.
Why is my signature under 10 KB after resizing?
At the small pixel sizes exam notices use, a signature on white paper compresses to very few bytes. Enter 10 in the minimum box, or pick your notice's preset, and the tool adds extra bytes to the JPG to reach 10 KB without changing how the signature looks or its pixel dimensions. Portals check files in different ways, so follow the upload page's own instructions.
Is 20 KB the same as 0.02 MB?
In the decimal convention, yes: 20,000 bytes is 0.02 MB. In the binary convention, 20 KB is 20,480 bytes. The tool keeps the file under 20,000 bytes, so it is under 20 KB and under 0.02 MB by either count.
Check your own upload page.
Copy the pixel and KB limits from the current notice or the upload screen. FormAssets applies the size and pixel settings you enter; it cannot judge the subject, background, handwriting, identity or document content.
Compare the numbers in the pixels, KB and DPI guide, or start from an application preset linked to its official notice.
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