Compress your images
Drop images here
or click the button below to browse JPG, PNG and other image files from your device.
Compression runs locally in your browser for maximum privacy.
Files are listed in the order you add them. You can compress again with different settings at any time.
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Compression settings
Leave both fields empty to keep original dimensions. Aspect ratio is preserved.
Auto optimize converts large PNG screenshots to JPEG for much smaller file sizes. Choose “Keep original format” if you need transparency.
JPEG images benefit most from compression. PNGs are recompressed but may not shrink as much unless converted to JPEG.
Why use this image compressor?
Built for speed, privacy and everyday use — from CV uploads to portfolio websites and LMS portals.
Fast, in-browser compression
No waiting for uploads or queues. Images are compressed instantly using your device’s processor.
Privacy-first
Files never leave your browser, making this tool safe for documents, IDs, receipts and private photos.
Batch download as ZIP
Compress multiple images at once and grab them all neatly packed into a single ZIP file.
Frequently asked questions
Short answers to the most common questions about this image compressor.
What is an Image Compressor?
An image compressor reduces the file size of JPG and PNG images while preserving as much visual quality as possible. This is extremely useful when sharing photos through email, uploading images to websites, reducing storage usage, improving loading times, or preparing files for social media, messaging apps, and online forms. GoPDFTools provides a fast, private, and free image compression tool that runs entirely inside your browser — your images never leave your device.
Why compress JPG and PNG images?
Modern cameras and smartphones produce large, high-resolution images that can be difficult to upload or send. Compression helps reduce file sizes dramatically without noticeable quality loss. Smaller images load faster, share quicker, and save valuable space on your device. Businesses often compress product photos, portfolios, email attachments, and scanned documents to meet size limits imposed by platforms.
How does GoPDFTools Image Compressor work?
GoPDFTools uses advanced client-side algorithms that run with JavaScript and WebAssembly. Your images are processed locally in your browser, scaled and optimized based on your chosen compression level, and made significantly smaller within seconds. Since no data is uploaded, your private files — including IDs, receipts, client photos, and business assets — remain completely secure.
Features of this Image Compressor
- ✔ Free, fast and secure — no uploads, no tracking
- ✔ Compress JPG and PNG images in seconds
- ✔ Works on mobile, desktop and tablets
- ✔ No watermarks or file limits
- ✔ Ideal for email attachments and website uploads
- ✔ Instant downloads with accurate compression percentage
How to compress images online
- Click Choose Images or drag your JPG/PNG files into the orange box.
- Select your compression level if available (default is balanced quality).
- Click Compress Images.
- Download compressed images individually or as a ZIP file.
When should you compress images?
- To reduce email attachment size
- To upload faster on websites and forms
- To minimize storage on your device
- When sharing images on messaging apps
- For faster loading on social media and blogs
- Before converting images to PDF for smaller file output
Related tools
You may also find these tools helpful: Images to PDF, JPG to PDF, PNG to PDF, Compress PDF, PDF to JPG.
Extended FAQs
1. Are my images uploaded or stored?
No — compression happens entirely in your browser. Nothing is sent to a server.
2. Will compressing images reduce the quality?
Slightly, depending on the compression level. The default mode balances quality and size.
3. Which image formats are supported?
JPG, JPEG, PNG. Other browser-supported formats may also work.
4. Can I compress multiple images at once?
Yes, batch compression is fully supported.
5. Are there file size limits?
No limits — only your browser memory determines capacity.
6. Can I compress transparent PNG images?
Yes, transparency is preserved.
7. Does this tool work on mobile?
Yes, fully optimized for Android and iPhone browsers.
8. Can I use this for scanned documents?
Yes — reducing size makes scanned PDFs and images easier to email.
9. Are there watermarks?
No watermarks. 100% free.
10. Can I use this compressor for business use?
Absolutely — suitable for professional and commercial projects.
11. Can I compress images before converting to PDF?
Yes, and it helps produce smaller PDF files. You can then use
Images to PDF.
12. Does compression happen instantly?
Usually within 1–2 seconds, even for large images.
13. Is this safer than online upload-based compressors?
Yes — since no image ever leaves your device, it is far more private.
All PDF tools in one lightweight toolbox.
Every tool is free, fast and runs directly in your browser with no file uploads.