1. Upload Your Image
Drag and drop any JPG, PNG, WebP, AVIF, GIF, or BMP file into the drop zone, or click to browse your files. Supports images up to 50MB with full EXIF orientation support.
Compress Image to 250KB Online
Free, fast, and completely private. Drop in any JPG, PNG, WebP, or AVIF photo and compress it to exactly 250KB right in your browser — no uploads, no servers, no watermark.
Why Compress to 250KB: E-commerce Thumbnails & Catalog Photos
250KB is a common ceiling for e-commerce thumbnail grids and catalog photos. It keeps product pages snappy even when a listing shows a dozen images, while still showing texture, colour, and fine print clearly enough for shoppers to trust what they're buying.
Real-World Use Cases for 250KB
- The exact upper limit of the current Passport Seva digital photograph standard (10–250KB, JPEG, 630×810px).
- A dependable size for OCI card and Indian visa photo uploads that follow passport-style specifications.
- Popular ceiling for e-commerce thumbnail grids that need to load quickly even when a listing shows a dozen images at once.
Official Portal & Exam Size Guidelines
Published specifications from recruitment and government portals whose accepted range includes 250KB. Always confirm against your specific exam's current notification before submitting.
| Portal / Exam | Document | Accepted Size | Format | Dimensions |
|---|---|---|---|---|
| Passport Seva (Indian Passport, 2026 standard) | Digital Photograph (upper limit) | 10–250 KB | JPEG | 630×810px |
| OCI Card applications | Photograph | Passport-style specs | JPEG | 35×45mm |
| E-commerce thumbnail grids | Product thumbnail | Under 250 KB recommended | WebP/JPG | Varies |
Compress to a Specific Size
Choose your exact target file size and compress images with precision. Our intelligent algorithm optimizes quality and dimensions automatically.
How It Works
Four simple steps to compress your images without compromising privacy. All processing happens locally in your browser.
2. Choose Target Size
Select your desired output size from 20KB to 500KB. Our intelligent binary search algorithm automatically adjusts quality and dimensions to reach your target precisely.
3. Compress
Click the Compress button. Our binary search quality optimization finds the best quality setting for your target size in milliseconds, right in your browser. No uploads required.
4. Download
Preview the before and after results, then download your compressed image instantly. Compare file sizes, dimensions, compression percentage, and output format at a glance.
Supported Image Formats
Our compressor works with all major image formats and intelligently selects the best output format for your needs.
JPG / JPEG
The most common photo format. Excellent compression for photographs with rich colors. Our tool optimizes quality settings to reach your target size while preserving visual fidelity.
PNG
Lossless format with full transparency support. Ideal for screenshots, graphics, logos, and images with text. We preserve transparency when compressing PNG files automatically.
WebP
Modern format from Google offering superior compression. WebP typically produces files 25-35% smaller than JPEG at equivalent quality. We auto-convert when your browser supports it.
AVIF
The next-generation format with the best compression ratios. AVIF can reduce file sizes by 50% compared to JPEG. Automatically used for very small target sizes when your browser supports it.
Your Privacy Matters
Unlike most online image compressors, we never upload your images to a server. All compression happens locally in your browser.
Every image you compress using Compress To KB is processed entirely within your web browser using JavaScript and the HTML5 Canvas API. This means your images are never sent over the internet, never stored on any remote server, and cannot be accessed by us or any third party. Compressed images exist only in your browser's memory and are discarded when you close the page.
This makes Compress To KB ideal for compressing sensitive photos, confidential documents, or any image you prefer to keep private. Your data stays on your device, exactly where it belongs. Once the page is loaded, you can even compress images without an internet connection.
Related Guides
Go deeper on formats, privacy and web performance in our blog.
How to Optimize E-Commerce Product Images for Faster Sales
Matching target sizes to thumbnails, main images and zoom views across a catalog.
How Image Size Directly Impacts Core Web Vitals and Mobile SEO
Why image weight is the biggest lever for LCP, load time and mobile search rankings.
Frequently Asked Questions About the 250KB Tool
Yes, per the Ministry of External Affairs' 2026 digital photo standard for the Passport Seva portal, JPEG photographs must be between 10KB and 250KB at 630×810 pixels. 250KB is the exact ceiling, so we recommend targeting slightly under it (like our 225KB tool) for a small safety margin.
The portal validates pixel dimensions (exactly 630×810px) and face-area percentage (80–85%) in addition to file size. A photo that's under 250KB but the wrong dimensions, or with glasses/an off-white background, will still be rejected under the new 2026 rules.
No. The grace period for the old 51×51mm square format ended on 16 February 2026. All passport applications since then are assessed only against the new 35×45mm / 630×810px digital standard.
For a small grid thumbnail, yes — something in the 50–150KB range usually looks identical at that display size. Reserve 250KB for your main product image or photos that customers might zoom into.
Our tool treats 1KB as 1,024 bytes (the binary definition computers actually use), so choosing 250KB targets a file of at most 256,000 bytes. A small number of strict portals count 1KB as exactly 1,000 bytes instead; in that rare case, aim slightly under 250KB to be safe.
At 250KB, expect quality that is excellent, with fine detail like hair and background texture preserved. Our tool always reduces quality gradually first and only shrinks pixel dimensions if quality reduction alone can't reach 250KB, which keeps the result looking as sharp as possible for this target.
For a 250KB target, our tool not needed for typical passport or ID-photo dimensions. You generally don't need to resize manually first — the binary-search engine tries quality reduction before touching dimensions, since that usually preserves more visible detail than shrinking the image outright.
You can upload JPG, PNG, WebP, AVIF, GIF, or BMP and compress to 250KB. For output, choose Auto (the tool picks the best format for a 250KB target) or force JPG, PNG, WebP, or AVIF specifically using the Output Format dropdown.
No. Compressing to 250KB happens entirely inside your browser using the HTML5 Canvas API — nothing is ever sent to a server. That matters especially for a passport or OCI photo, which you may not want leaving your device at all.
Not currently — this 250KB tool processes one image at a time so it can fully dedicate its binary-search process to hitting your target precisely. Run it again immediately for additional images; there's no limit on repeat uses.
Not directly — this 250KB tool accepts JPG, PNG, WebP, AVIF, GIF, and BMP, but not Apple's HEIC format. Most iPhones convert HEIC to JPG automatically during a browser upload; if yours doesn't, switch to Settings → Camera → Formats → "Most Compatible" first.
Popular Compression Targets
Quick links to our most-used target-size compressors.
Compress to 275KB
Fits marketplace and classifieds listings that need real detail.
Compress to 300KB
Ideal for e-commerce product photos and portfolio images that need good detail.
Compress to 350KB
Built for detail-heavy product photography and design showcases.