TinyPNG
Compress PNG and JPEG images without visible quality loss
Result
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How to Use This Tool
Go to TinyPNG.com in your browser. No sign-up or account needed.
Drag and drop your PNG or JPEG images directly onto the upload area (or click to select files from your computer).
Wait a few seconds while the tool automatically compresses each image — you'll see the file size drop with a visual preview.
Click the 'Download' button for each compressed image, or use the 'Download all' option to save them as a ZIP archive.
Replace the original files with the compressed versions — the visual quality will appear identical to the naked eye.
What Is TinyPNG?
TinyPNG is a free, web-based image compression tool that reduces the file size of PNG and JPEG images with no visible loss in quality. It works by intelligently removing unnecessary color data and optimizing compression settings, making images load faster on websites, apps, and emails without degrading the user's viewing experience. For designers, developers, and content creators, TinyPNG is essential because smaller images mean quicker page loads, lower bandwidth costs, and better SEO rankings — all while preserving the crispness and detail that matters most.
Formula
TinyPNG uses a perceptual compression algorithm that balances two factors: the desired file size reduction and a quality threshold. The effective formula is: Reduction % = (Original Size – Compressed Size) / Original Size × 100%. Behind the scenes, the tool analyzes the image's color complexity and applies either color quantization (for PNGs) or optimized quantization tables (for JPEGs) to remove information that is least noticeable to the human eye. It targets a Peak Signal-to-Noise Ratio (PSNR) of around 40 dB or higher, ensuring that the compressed image looks identical to the original under normal viewing conditions.
Tips for Best Results
💡 Always use TinyPNG on images before uploading to your website — it can shrink file sizes by 50‑70% without hurting visual quality.
💡 For icons or logos with few colors, convert them to PNG‑8 format first (if possible) to maximize compression, but TinyPNG handles that automatically.
💡 Compress multiple images at once by dragging a whole folder into the upload area — batch processing saves time on large projects.
💡 After downloading, check a few images side by side with the originals to confirm the loss is invisible; you can safely delete the originals to free up storage.
Frequently Asked Questions
Does TinyPNG reduce image quality?
TinyPNG uses 'lossy' compression, but it's tuned to remove details the human eye can barely perceive. Under normal viewing (on screens or prints), you won't notice any difference. For high‑end photography or archival purposes, you might want to keep the originals.
Is TinyPNG free to use?
Yes, TinyPNG is free online for up to 20 images per batch (each up to 5 MB). For larger volumes, they offer a paid API service for developers and businesses.
Can I compress JPEG files with TinyPNG?
Absolutely. TinyPNG works on both PNG and JPEG images. For JPEGs, it re‑encodes the file with optimized quantization tables, often reducing size by 40‑60% while maintaining excellent visual quality.