Image Compressor Online
Reduce JPG, PNG & WebP Size Instantly
Compress images online and target any exact file size 20KB, 200KB, 500KB or any custom size you need. Works with JPG, PNG and WebP files. No signup, no watermark, no quality compromise. Your files stay on your device 100% private and free to use.
How to Compress Images Online
Three simple steps. No software needed works directly in your browser.
Select Your Files
Drag and drop JPG, PNG, or WebP images into the tool, or click Browse Files to select from your device. Upload up to 10 images at once.
Set a Target Size
Choose a preset 20KB, 100KB, 200KB, 500KB or enter any custom KB value. Fine-tune results with the quality mode selector.
Download Instantly
Click Compress Images and your files are ready in seconds. Download individually or grab all compressed files at once. See exact savings per image.
Why Choose Our Image Compressor
Built for job portals, Fiverr gigs, PPSC forms, WhatsApp, and everyday web use.
Set an exact target like 20KB or 200KB. Our binary-search algorithm adjusts compression automatically to hit your target perfect for government portals and job application forms.
Advanced canvas compression preserves sharpness and color accuracy. Images compressed to 200KB or higher look nearly identical to the original file.
All processing happens inside your browser. No file is uploaded to any server. No data is stored. Safe for ID photos, medical documents, and private images.
Select up to 10 images at once and compress them all in a single click. Download files individually or save them all as a ZIP.
Compress images directly from your phone or tablet. Fully responsive design no app download, no installation required.
Common Target Sizes Explained
Different platforms need different file sizes. Here is what each target is used for and why it matters.
Resize Image to 20KB
PPSC, NTS, and FPSC exam portals require passport photos under 20KB. These forms often have strict size limits that most cameras and phones cannot meet without compression.
Compress to 20KBResize Image to 100KB
Job portals, university applications, and professional profile uploads cap images at 100KB. Compress your photo to meet the limit while keeping it sharp enough to look professional.
Compress to 100KBCompress Image to 200KB
Fiverr gig images, freelance portfolios, and ecommerce product listings often have a 200KB upload limit. Hit the target without losing the sharpness that sells your service.
Compress to 200KBCompress Image to 500KB
LinkedIn, Facebook, and X (Twitter) posts perform better with images under 500KB. Smaller files load faster, reach more people, and get more engagement on slower connections.
Compress to 500KBCompress Image to 1MB
Email attachments and website banners should stay under 1MB for fast delivery. Large images slow page load times, hurt your SEO score, and can cause email delivery failures.
Compress to 1MBCustom KB Target
Need 75KB, 350KB, or any other value? Type any custom target. The binary-search compression algorithm finds the exact quality setting to match your requirement for any portal or platform.
Set Custom TargetJPG vs PNG vs WebP Which Format Should You Use?
Understanding formats helps you compress smarter. Here is when to use each one.
| Format | Best For | Compression | Transparency | File Size | Browser Support | When to Compress |
|---|---|---|---|---|---|---|
| JPG / JPEG Best for Photos | Photos, portraits, real-world images | Excellent | No | Smallest | Universal | Always highly compressible |
| PNG | Logos, screenshots, graphics with text | Moderate | Yes | Larger | Universal | When transparency is not needed, convert to JPG first |
| WebP Best Overall | Web images, modern browsers | Excellent | Yes | ~30% smaller than JPG | Modern browsers | Ideal for websites and social media posts |
| AVIF | Next-gen web images | Best-in-class | Yes | ~50% smaller than JPG | Chrome and Firefox only | Future format use our AVIF to JPG Converter |
Everything About Image Compression
What Is Image Compression and Why Does It Matter?
Image compression reduces file size by removing redundant data that the human eye cannot easily detect. A photo taken on a smartphone is often 3 to 8 MB far too large for websites, social media uploads, email attachments, or government application portals. Large image files slow down websites (which directly hurts your Google ranking), exceed platform upload limits, and waste mobile data. A good image compressor shrinks those files down while keeping the picture looking sharp.
How to Resize an Image to 20KB Without Blurring
PPSC, NTS, and FPSC exam portals require passport-size photos under 20KB. Getting there without obvious blurring takes a specific approach:
- Start with an image already cropped to the required dimensions usually 35x45mm or 413x531 pixels for passport photos
- Select 20KB from the Target Size dropdown the binary-search algorithm adjusts compression to hit the exact target
- Use Balanced quality mode Max Compression at very low KB can make facial details blocky
- If the result still looks blurry, reduce the image dimensions first using our Image Cropper, then run compression again
How to Compress an Image to 200KB for Fiverr
Fiverr gig images load faster and attract more clicks when they are under 200KB. Select 200KB from the Target Size dropdown, upload your gig image, and click Compress. For best visual results, use 1280x769 pixels at a 16:9 ratio you can set those exact dimensions first with our Image Cropper.
Does Compressing an Image Reduce Quality?
Yes compression always involves some trade-off, but how noticeable it is depends entirely on the ratio. Compressing a 3MB photo to 500KB is nearly invisible to the eye. Going from 3MB to 20KB will produce some visible softening, but that is expected and accepted for compliance-form photos. For professional use portfolios, gig images, product photos keeping the target at 200KB or above ensures the output remains sharp enough to look great.
What Is the Difference Between KB and MB Targets?
KB targets are used for strict compliance government forms, job applications, and portal uploads where a specific file size is mandatory. MB targets are more relevant for website performance and email deliverability. Our tool covers both: use the presets for common KB values or type any custom number. To target 1MB, enter 1024. To target 2MB, enter 2048.
Is It Safe to Compress Images Online?
With most online tools, your images are uploaded to a remote server which means someone else's computer processes your files and may store them. With StackFlow Tools, everything happens inside your own browser. No file ever leaves your device. There is no upload, no server-side processing, and no data storage. This makes it safe for sensitive documents, ID photos, medical images, and any private picture you would rather not share with a third party.
You Might Also Like These
Frequently Asked Questions
Everything you need to know about compressing images and reducing file size online.
Upload your image, select 200KB from the Target Size dropdown, and click Compress Images. The tool uses a binary-search algorithm to hit your target as closely as possible. Works on JPG, PNG, and WebP files.
Select 20KB as your target size and click Compress. For the sharpest result, first crop your photo to the required passport dimensions using our Image Cropper this prevents blurring that happens when you compress a large image down to a very small file.
Yes completely free with no hidden limits. No signup, no watermark, no daily cap. All compression processing happens in your browser, so your images never leave your device.
Some quality loss happens with lossy compression, but how visible it is depends on the compression ratio. Reducing a 3MB photo to 500KB is nearly unnoticeable. Going down to 20KB will show some softening this is unavoidable at extreme compression ratios and is generally accepted for compliance form photos.
You can upload JPG, JPEG, PNG, and WebP images. All files are output as JPG for maximum compatibility across all platforms and devices.
No. All compression happens entirely within your browser using your device's own processing power. Your images are never uploaded to any server and are never stored anywhere. This makes the tool safe for sensitive or private photos.
Yes. Select up to 10 images at once and compress them all in a single click. Download each file individually or save all compressed images at once.
Ready to Compress Your Images?
No signup. No watermark. No limits. Compress to any KB target in seconds directly in your browser, with nothing uploaded.
Start Compressing Now