Compress an image to 100 KB

To compress an image to 100 KB, upload the photo and the tool finds the highest JPEG quality and pixel size that keep the file at or under 100 KB (1,00,000 bytes), while keeping the original proportions. If your form also gives pixel dimensions, pick the exam preset instead so both rules are met.

🔒 Your files never leave this device — all processing happens in your browser.

How to use this tool

Choose an image (JPG, PNG, WebP, HEIC or TIFF).
The 100 KB target is already set. Add a minimum in the Min KB box if your form has one.
Leave width/height empty to keep the original dimensions, or type the pixels your form needs.
Download when the badge turns green.

Worked examples: real input and output

Measured by running this tool on our test photos (headless Chrome, 2026-10-03). Your numbers will differ slightly with your own photo.

Case	Input	Output
Target 100 KB, no preset	1.2 MB phone portrait, 2687 × 3356 px	1101 × 1374 px, 97.6 KB JPEG, 300 DPI

Which exams and forms have a 100 KB limit?

These presets in our database have a 100 KB maximum. Use the exam page so the pixels are right too:

Document	Dimensions	File size	Format
UPSC — Signature	400 × 500 px	20–100 KB	JPEG
JEE Main — Signature	350 × 150 px	10–100 KB	JPEG
NEET UG — Signature	350 × 150 px	10–100 KB	JPEG
CTET — Photo	276 × 354 px	10–100 KB	JPEG
IBPS — Handwritten declaration	800 × 400 px	50–100 KB	JPEG
SBI — Handwritten declaration	800 × 400 px	50–100 KB	JPEG
RBI — Handwritten declaration	800 × 400 px	50–100 KB	JPEG
LIC — Handwritten declaration	800 × 400 px	50–100 KB	JPEG
WBPSC — Photo	138 × 177 px	up to 100 KB	JPEG
WBPSC — Signature	138 × 59 px	up to 100 KB	JPEG
GDS — Photo	320 × 400 px	30–100 KB	JPEG

Preset data last checked 26 September 2026 · Specs change between notifications — always verify with the latest official notification before you upload.

When to use it

Forms that state only a KB limit, such as 'photo under 100 KB'
Emailing or uploading a phone photo that is several MB
Meeting a KB limit when the portal does not fix the pixels

Understanding your result

Bytes vs KB: 100 KB is checked as 1,00,000 bytes, which is the stricter reading, so the file passes either way.
Pixels: Without a preset, the tool keeps the aspect ratio and reduces pixels only when quality alone is not enough.
Green ✓: The file is at or under the target.

Detailed guide

100 KB gives plenty of room for a photo, so the usual problem is starting from a multi-megabyte phone image. Limits of 100 KB are typical for passport and visa uploads, some university forms and larger photos with specified cm sizes. At this size you can keep a high JPEG quality at 600–1,000 px wide. For document scans rather than photos, image to PDF may be what the form actually wants.

New to KB limits? Read the full guide on the compress to 50 KB page: how the compression works, 1,000 vs 1,024 bytes, min–max ranges and keeping photos sharp.

Frequently asked questions

How do I make a photo 100 KB?

Open this page, add the photo and download the result — it will be under 100 KB. If the form also fixes the pixel size, use the exam preset instead.

Will a 100 KB photo look blurry?

The tool keeps the highest JPEG quality that fits. Cropping to head-and-shoulders first helps a lot.

Is it safe to compress ID photos here?

Yes — compression happens on your device. No file is uploaded or stored.

Related guides

⚠ Specs change between notifications — always verify with the latest official notification before you upload.