Resize Image to 100KB
Here the compressor starts with a 100KB target and JPG output. Add a photo, a signature or a scanned page, press Compress, and download a copy that is 100KB or smaller. Your file is read and re-encoded locally, without being sent to TryDocsy.
Compression Mode
Supports decimals: 100, 100.5, 1,000 (comma as separator)
Output Format
How it works
- 1. Upload your images
- 2. Enter your target file size (e.g., 100KB)
- 3. Click Compress and download
Drop images here or click to upload
JPG, PNG, WebP, GIF (max 50MB each)
Perfect for:
Email Attachments
Compress to under 500KB
Website Images
Fast loading, better SEO
Social Media
Faster uploads
Save Storage
Free up device space
100% Private: All compression happens in your browser. Your images never leave your device.
Exams that accept a 100KB photo or signature
A 100KB file sits inside the published upload range for these 8 exams. Each link opens that exam's page with the full photo and signature specification.
- UPSCphoto 20–300KB (inside the range); signature 20–300KB (inside the range)
- NEETphoto 10–200KB (inside the range)
- JEE Mainphoto 10–200KB (inside the range)
- GATEphoto 5–500KB (inside the range); signature 5–500KB (inside the range)
- DSSSBphoto 50–300KB (inside the range)
- NDAphoto 20–300KB (inside the range); signature 20–300KB (inside the range)
- CTETphoto 10–100KB (100KB is the maximum)
- CUETphoto 10–200KB (inside the range)
Limits change between recruitment cycles, so confirm them in the current official notification before you submit.
Last updated
A 100KB limit is roomy by exam standards. It is the photograph ceiling for CTET (10–100KB) and sits comfortably inside the ranges for NEET, JEE Main and CUET (10–200KB), UPSC and DSSSB. This page opens the TryDocsy compressor with 100 already in its target box, which also suits scanned certificates, ID cards and other pictures that a form wants under 100KB.
Compression runs locally in the browser tab, using the same canvas re-encoding as the main image compressor. With this much room, the usual problem is not fitting the budget but keeping text and fine detail readable when the original is a large phone photo or a full-page scan. The sections below cover both.
How it works
1. Upload the image
Use the dashed box marked “Drop images here or click to upload”. It takes JPG, PNG, WebP and GIF files of up to 50MB, so an unedited phone photo or a scanner export can go straight in.
2. Check the 100 KB target
The Compression Mode panel is on Target Size, and Enter Target Size already holds 100 with KB selected rather than MB. Output Format is JPG. Leave these alone unless your form names a different limit.
3. Run the compression
Click Compress. Once it finishes, the file row shows its size before and after with the saving as a percentage, and a large original that cannot fit at full resolution is scaled down automatically.
4. Download the 100KB copy
Click Download Image for one file or Download All for a batch. Files are saved as JPG with “-compressed” added to the original name, ready to attach to the application.
When you'd use it
CTET and other 100KB photo ceilings
CTET accepts a photograph from 10KB to 100KB, so this target produces the largest, most detailed file the form will take.
Medical and engineering entrance forms
NEET and JEE Main allow photos up to 200KB. A 100KB copy is well inside that and leaves the application light, which helps on a slow mobile connection during the last days before a deadline.
Scanned certificates saved as images
Some forms want a marksheet, caste certificate or ID card as a JPG rather than a PDF. A single page compressed to 100KB usually keeps printed text readable when it is cropped and scaled sensibly first.
Larger photo formats
DSSSB's photograph is 480×672 pixels with a 50KB minimum, bigger than the usual passport size. A 100KB target clears that floor while keeping the extra pixels sharp.
Hostel, library and club registrations
College hostel allotments, library cards and sports-club sign-ups sometimes ask for an identity picture below 100KB. The same preset handles those without any guessing at quality sliders.
Where 100KB fits in exam ranges
Among the exam presets on this site, 100KB is accepted for the photograph by CTET, UPSC, NEET, JEE Main, GATE, DSSSB, NDA and CUET, and for the signature only by UPSC, GATE and NDA. The list on this page shows each range with 100KB marked as a ceiling, a floor or inside the range.
It is too large for the most common government forms. SSC CGL, IBPS PO and SBI PO stop at 50KB, and railway forms at 70KB, so a 100KB photo is rejected there. Use the 50KB page for those, and the 20KB page for most signatures.
How much picture 100KB buys
The target allows 102,400 bytes, which is 819,200 bits. On a 413×531 passport-size photo that is about 3.7 bits per pixel, and on DSSSB's 480×672 frame about 2.5, both enough for high JPEG quality. In practice a correctly sized photo often fits at the compressor's best quality and comes out below 100KB.
A full-page scan is different. An A4 page at 150 pixels per inch is 1240×1754, over two million pixels, which leaves about 0.38 bits for each one. Printed text survives that reasonably well because white paper compresses to almost nothing, but a colour photo of the same pixel count would look soft.
A 12-megapixel phone photo gets only about 0.07 bits per pixel from 100KB. The compressor tries every JPEG quality at full size first and only then reduces the dimensions, so resizing the photo to the size your form lists, before compressing, gives a cleaner and more predictable result.
Getting a readable document scan under 100KB
Crop the scan to the edge of the paper so no bytes are spent on the scanner lid or the table. Rotate it upright first, since a crooked page is harder to read once compressed. For text-only pages, converting to grayscale removes the colour variation that JPEG otherwise has to store, which usually frees space for sharper letters.
If a page is still fuzzy at 100KB, scale it down rather than compressing harder: a page about 1,200 pixels wide is readable on screen and fits the budget far more easily than a 3,000-pixel scan. A multi-page document is better handled as a PDF with the PDF compressor.
The tool measures 1KB as 1,024 bytes, so its 100KB is 102,400 bytes, which a portal counting in thousands would show as 102.4KB. Entering 97 gives a margin against that when the limit is enforced strictly.
Frequently asked questions
Can I use a 100KB photo for SSC or bank exams?
No. Those forms cap the photograph at 50KB and would reject a 100KB file. Compress to 50KB or less instead.
How close to 100KB will the file be?
When the photo fits at full size, the search stops once it lands between 95KB and 100KB. Small or simple images can finish lower, because their best quality already fits the target.
Should I pick 100 KB or 0.1 MB?
Either works, but they differ slightly: this tool's 0.1MB is about 104,858 bytes and 100KB is 102,400 bytes. Keep the KB unit when the form states its limit in KB.
Why is my scanned certificate hard to read after compression?
The scan had more pixels than 100KB can hold at good quality. Crop it to the paper, convert text pages to grayscale, and scale it to roughly 1,200 pixels wide before compressing.
Does compressing to 100KB change the image's pixel size?
Only when needed. The compressor keeps the original dimensions if any JPEG quality fits under 100KB, and scales the image down only when even its lowest quality is too big.
Are my certificates or ID scans uploaded while compressing?
No. The file is opened and re-encoded by your browser. TryDocsy's servers never receive the image, so private documents stay on your device.