Free, no upload required
Compress any image to under 100KB entirely in your browser. Drop your image, download the result. Nothing is uploaded to any server.
No uploads
Files stay on your device
Any format
JPEG, PNG, WebP, HEIC
Exact target
Binary search algorithm
Drop image here to compress to 100KB
JPEG, PNG, WebP, AVIF, HEIC. All processing stays in your browser.
The 100KB limit is common across a wide range of official upload systems. Phone cameras produce photos of 3 to 8MB by default, which is 30 to 80 times larger than the limit. This tool bridges that gap without requiring any software installation.
Job application portals
Many recruitment platforms cap profile photos and supporting documents at 100KB.
University admission forms
Student portal photo uploads typically require under 100KB to fit the system's constraints.
Government online forms
Passport photo uploads, ID submissions and license applications commonly require 100KB or less.
Professional membership applications
Industry bodies and certification portals often impose this limit on member photographs.
Most online compressors apply a fixed quality setting and hope the output happens to land near your target. This tool works differently. It runs a binary search over the encoder quality parameter, checking the output size at each step and adjusting up or down until the result is as large as possible while still fitting under 100KB.
This means you always get the highest possible quality for the target size, not just an arbitrary reduction. For very large images where even the lowest quality setting exceeds 100KB, the tool also scales the image dimensions progressively until the target is reached.
Most government portals, job application systems and university submission forms set a 100KB limit on uploaded images to keep database storage manageable and ensure fast processing. The limit is common for profile photos, scanned signatures and supporting documents. The system rejects files that exceed the limit regardless of how the image looks.
For most photographs taken with a phone, compressing to 100KB produces a result that is visually acceptable at the sizes these portals display images. A 3MB phone photo can typically be compressed to 100KB with no visible degradation at normal viewing sizes. Very large, high-resolution images may show slight compression at 100KB.
JPEG, PNG, WebP, AVIF and HEIC are all supported as input. The output is JPEG or WebP depending on your selection. JPEG is the safest choice for submission portals as it is universally accepted.
No. All compression happens entirely in your browser. Your image never leaves your device. You can verify this by disconnecting from the internet after the page loads, the tool still works.
The tool runs a binary search over the quality parameter of the JPEG or WebP encoder. It tries quality 45, checks the output size, then goes higher or lower depending on the result. It converges on the highest quality setting that still produces a file under 100KB in 6 to 8 iterations. If even the lowest quality setting produces a file over 100KB, the tool also reduces the image dimensions proportionally until the target is reached.
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