EveryToolCompress Image to Exact Size
Reduce JPG, PNG, WEBP, and HEIC images to standard sizes (20KB, 50KB, 100KB) for government forms, JEE/NEET admissions, and portals - free, with zero upload.
Drop images here to compress
JPG, PNG, WebP, HEIC - any size - all processing is done locally in your browser
100% Free & 100% Private
All processing happens entirely in your browser. We never upload your data to any server. No signup, no account, no hidden fees. Just free, secure tools.
EveryTool's Image Compressor is a browser-based exact-size compression tool that uses a binary search algorithm - not a fixed percentage - to guarantee output files stay strictly under your specified kilobyte limit. Unlike TinyPNG and Squoosh, which compress to a quality percentage without guaranteeing a target file size, EveryTool iterates through quality and resolution combinations inside your browser tab using the JavaScript Canvas API. No image data is transmitted to any server - 0 file uploads, full privacy for sensitive documents such as ID photos, signatures, and medical scans.
How to Compress an Image to 50KB (4 Steps)
- 1. Upload
Drag & drop your photos (JPG, PNG, HEIC, WEBP). Multiple files supported - or paste from clipboard with Ctrl+V.
- 2. Set Target
Choose a preset (20KB, 50KB, 100KB) or type a custom limit. Set individual targets per image for mixed batches.
- 3. Auto Compress
The binary search algorithm tests quality levels in your browser until it locks in the maximum quality under your exact KB limit.
- 4. Download
Save files individually or download everything as a ZIP archive. Use the before/after slider to inspect quality before saving.
Why Do Government Portals Require Specific File Sizes?
Portals like UPSC, SSC, NTA (JEE/NEET), and state recruitment boards pre-allocate database storage per application. A file even 1KB over the limit causes a hard server-side rejection - the form will not submit. Common requirements:
How Does Exact-Size Compression Work? – The Binary Search Algorithm
Standard image compressors set quality to a fixed percentage - say, 70%. But a 5MB raw photo compressed to 70% might still be 1.8MB, while a 400KB screenshot at 70% might drop to 28KB. There is no reliable relationship between a quality percentage and an output file size.
EveryTool's "Exact Size" engine uses a binary search algorithm:
- Set quality bounds: low = 0.01, high = 0.99.
- Compress at midpoint quality using the browser Canvas API.
- Measure output Blob size in bytes.
- If too large → lower the high bound; if within limit → raise low bound.
- Repeat for 10–15 iterations until size converges within 1KB of target.
- Generate the final Blob URL for download - no network request made.
This approach guarantees the highest possible visual quality at your exact target size - not a rough approximation. All computation runs in your browser tab using the JavaScript FileReader API and HTMLCanvasElement.toBlob(). Zero bytes are transmitted over the network.
EveryTool vs TinyPNG vs Squoosh vs CompressJPEG
| Feature | EveryTool ✓ | TinyPNG | Squoosh | CompressJPEG |
|---|---|---|---|---|
| Exact KB target output | ✅ Guaranteed | ❌ Percentage only | ❌ Percentage only | ❌ Percentage only |
| Runs locally (no upload) | ✅ 100% local | ❌ Server upload | ✅ Local | ❌ Server upload |
| Batch processing | ✅ Unlimited | ⚠️ 20 files/month free | ❌ One at a time | ⚠️ Limited |
| HEIC support | ✅ Yes | ❌ No | ✅ Yes | ❌ No |
| Per-image KB targets | ✅ Yes | ❌ No | ❌ No | ❌ No |
| Before/after comparison | ✅ Slider UI | ❌ No | ✅ Yes | ❌ No |
| Clipboard paste | ✅ Ctrl+V | ❌ No | ✅ Yes | ❌ No |
| Free, unlimited | ✅ Always free | ⚠️ 500 images/month | ✅ Free | ⚠️ Limits apply |
Image Size Requirements for Popular Government Portals
| Portal / Exam | Photo Size Limit | Signature Limit | Format |
|---|---|---|---|
| UPSC CSE | ≤ 300KB (min 3KB) | ≤ 300KB (min 1KB) | JPG |
| SSC CGL / CHSL | ≤ 50KB | ≤ 20KB | JPG |
| NTA JEE Mains | 10KB – 200KB | 4KB – 30KB | JPG/JPEG |
| NTA NEET | 10KB – 200KB | 4KB – 30KB | JPG/JPEG |
| IBPS PO / Clerk | ≤ 50KB (4.5×3.5 cm) | ≤ 20KB | JPG |
| RRB (Railway) | ≤ 100KB | ≤ 40KB | JPG |
| Passport (India) | ≤ 500KB | N/A | JPG |
| DU / JNU Admissions | ≤ 100KB | ≤ 50KB | JPG |
* Requirements change - always verify on the official portal before submitting.
Frequently Asked Questions
How do I compress an image to exactly 50KB?
Upload your image to EveryTool's compressor, then select '50KB' from the preset size buttons or type a custom limit. The tool uses a binary search algorithm - it tests multiple compression levels and resolutions in your browser until it finds the highest visual quality that stays strictly under 50KB. The result is ready to download in seconds, with no server upload required.
Is this image compressor completely free?
Yes - EveryTool's image compressor is 100% free with no hidden limits. There are no file count restrictions, no watermarks, no account required, and no subscription. You can compress dozens of images in a single batch session without any cost. The tool runs in your browser, so there are also no server costs that would require monetisation.
Are my images uploaded to a server?
No images ever leave your device. The compression engine uses the browser's native JavaScript FileReader API to load the image into memory, then the Canvas API applies iterative quality and resolution reductions entirely within your browser tab. The final compressed file is generated as a Blob URL - no network request is made at any point. Your photos stay completely private, even sensitive documents or ID photos.
Does the compressor support HEIC photos from iPhone?
Yes. You can upload HEIC or HEIF photos directly from your iPhone without converting them first. EveryTool automatically converts the HEIC file to JPEG in your browser using a client-side library, and then runs the exact-size compression algorithm on the converted image. The whole process - conversion and compression - happens locally without any upload to our servers.
Can I compress multiple images at once?
Yes, batch processing is fully supported. Select multiple files at once or drag and drop a group of images. Each image can have its own individual target size - for example, you can set photo1.jpg to 50KB and photo2.jpg to 100KB in the same session. Once all images are compressed, you can download them individually or as a single ZIP archive.
How does the exact file size algorithm work?
Standard compressors reduce quality by a fixed percentage - which produces unpredictable output sizes. EveryTool uses a binary search algorithm instead. When you request 50KB, the engine sets upper and lower quality bounds, compresses at the midpoint, checks the file size, then narrows the search range and repeats. After 10–15 iterations this converges on the highest possible quality that stays strictly under your target size - guaranteed.
What image formats are supported?
EveryTool's compressor supports JPEG, JPG, PNG, WEBP, and HEIC/HEIF formats as inputs. Output is typically saved as JPEG for photographs (best compression ratio) or PNG for images that require transparency. You can choose the output format per image or apply a global setting across your entire batch. GIF and SVG are not currently supported for compression.
Why do government portals and application forms require specific file sizes?
Government portals like UPSC, SSC, NTA (JEE/NEET), and state recruitment boards enforce strict file size limits - typically 10KB–50KB for photos and 5KB–20KB for signatures - because their servers process millions of applications and storage is provisioned in advance. Uploading a file even 1KB over the limit causes a hard rejection. EveryTool's exact-size compressor is specifically designed to hit these targets reliably every time.
Will compressing my image reduce its quality noticeably?
Quality loss depends on how large your original image is versus your target size. Compressing a 2MB photo to 100KB typically results in an image that looks nearly identical on-screen and perfectly acceptable for form submissions. Compressing a 5MB photo to 20KB will show visible quality reduction. EveryTool always finds the maximum quality possible within your target - you can use the before/after comparison slider to inspect the result before downloading.
How is EveryTool's compressor better than TinyPNG or Squoosh?
TinyPNG and Squoosh compress to a percentage - they cannot guarantee a specific output file size. EveryTool is the only free browser-based tool that lets you specify an exact KB target (e.g., 49KB) and guarantees the output stays under it. Additionally, EveryTool supports per-image targets in batch mode, a before/after comparison slider, clipboard paste, and full HEIC support - all without uploading anything to a server.
Can I compress images for WhatsApp profile photos or statuses?
Yes. WhatsApp recommends profile photos under 1MB and compresses status images on its own, but if you want precise control - for example, keeping a status image under 200KB to reduce mobile data usage - simply set your target size in EveryTool and download the pre-compressed image. Since everything runs locally in your browser, your personal photos are never exposed to any third-party server.
What is lossy vs. lossless image compression?
Lossless compression (used by PNG tools) reduces file size without discarding any pixel data - the image is identical to the original but smaller. Lossy compression (used by JPEG) achieves much higher size reduction by permanently discarding fine detail that is imperceptible to most viewers. EveryTool uses lossy JPEG compression for photographs, which delivers the smallest possible file size while preserving sufficient quality for forms, web use, and social media.
Does the compressor work on mobile phones?
Yes, EveryTool works on any modern smartphone browser - Chrome on Android and Safari on iPhone are both fully supported. The binary search compression engine runs inside the browser tab using JavaScript and the Canvas API, so it requires no app installation. Processing speed depends on your device's CPU; modern phones typically compress a 5MB photo in 3–6 seconds. HEIC photos from iPhone are also supported directly.
Is there a file size or resolution limit on uploads?
There is no hard server-side limit because no file is ever uploaded. The practical limit is your device's available RAM - most modern devices handle files up to 20–30MB without issue. For very large files (50MB+ raw camera exports), the browser may need a few extra seconds. If your browser tab runs low on memory, EveryTool will display an error and you can try reducing the image's dimensions before compressing.
Can I compress a PDF instead of an image?
This specific tool is designed for raster image formats (JPG, PNG, WEBP, HEIC). For PDF compression, EveryTool has a dedicated PDF Compressor tool that reduces PDF file sizes using a similar browser-based, privacy-first approach. If your government form requires both a compressed photo and a compressed PDF attachment, you can use both tools in separate browser tabs - neither will upload your files.
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