Resize Image to 100KB
Get photos and scanned documents under 100KB for upload forms and email, with the best quality that fits. Free, works on phones, nothing uploaded.
Select images to bring under 100 KB
Drag & drop JPG, PNG, WebP, GIF or BMP files, or click to browse
Resized on your device. Images are never uploaded.
Files never leave your device
Processed entirely in your browser — nothing is uploaded
No account required
No sign-up, no email, no usage counter
No file size limit
Bounded only by your own device memory
No watermarks
Your output comes back clean and unbranded
About this tool
100KB is the usual cap for uploading documents and photos to many portals, and it's a sensible size for email attachments and website images too. Unlike a 20KB signature, 100KB leaves enough room for a readable scan of a certificate or an ID card. This page opens with the limit set to 100KB: add photos or scans and each comes back as a JPG under 100KB, at the best quality that fits. Several files can go through at once, and none of them is uploaded.
How to Resize an Image to 100KB
- 1
Add the photos or document scans. Several files can go through together.
- 2
Keep the 100 KB limit, or set exact pixels if the destination asks for them and keep 100 KB as the maximum file size.
- 3
Resize, check the new size on each file, and download them separately or as one ZIP.
Why Use This 100KB Resizer
- Readable Document Scans
- 100KB is enough for small text on a certificate or ID card to stay legible. The tool keeps the dimensions as large as the budget allows before lowering quality further.
- Any Limit, Same Tool
- 100KB is preset, but the limit is just a number. The same page handles a 20KB signature, a 50KB photo or a 500KB attachment.
- Nothing Leaves Your Device
- Scans of marksheets, ID cards and bank documents are resized in your browser. Nothing is uploaded, and the resized copy carries no camera location data.
Tips for 100KB Uploads
- Scan documents at 150–200 DPI; higher resolutions only make the file harder to bring under 100KB.
- Straighten and crop scans before resizing so no bytes go on the table around the page.
- For multi-page documents, a form may want one PDF instead of images. JPG to PDF combines them.
- Keep a full-size copy; you can always make another small version later.
Frequently asked questions
How do I resize a scanned document to under 100KB?
Add the scan here and resize with the 100 KB limit. For text documents, scan in greyscale or crop away the margins first; both leave more of the 100KB for the text itself.
My image is already under 100KB. What happens?
It is saved again as a high-quality JPG that stays under the limit, without being shrunk. Re-saving also removes camera data such as the GPS location from the copy you upload.
Which format is the result?
JPG, which almost every upload form accepts. PNG and other formats are converted, and transparent areas become white. Choose WebP under Save as if that is what you need instead.
Why is the result smaller than 100KB, not exactly 100KB?
Image formats can't be cut to an exact byte count. The tool finds the best quality that stays under the limit, which usually lands a few kilobytes below it.