Will compression make my images look blurry or pixelated?

At 75–90% quality, the difference is invisible to the naked eye on screens and in print at standard viewing distances. Below 50%, you may begin to notice softness around sharp edges and text, and JPEG blocking artifacts in flat-color areas. Use the live preview to judge the exact quality-vs-size tradeoff before downloading.

How much smaller will my images get?

It depends on the image content. Photos with complex detail (landscapes, crowds, textures) compress less because the encoder needs more bits to represent fine detail. Images with flat colors (screenshots, logos, infographics) compress more because large uniform areas encode very efficiently. Typical savings at quality 80 are 40–80%, a 5 MB photo commonly compresses to 800 KB–1.5 MB.

Can I compress PNG files without losing transparency?

Yes. PNG transparency (alpha channel) is fully preserved during compression. The tool applies lossless optimization, removing embedded metadata, optimizing Huffman tables, and stripping unnecessary chunks, without touching a single pixel. The output PNG is smaller but visually and functionally identical.

What formats can I compress?

JPG, JPEG, PNG, WebP, and GIF are all supported. For JPG and WebP, quality is adjustable. For PNG, compression is lossless. For GIF, the tool optimizes the color palette and frame structure.

Is there a file size or image count limit?

No. Process one image or 100 images. Upload files of any size, the browser handles processing in memory. Very large files (30+ MB TIFF exports from a DSLR) may be slow to process on mobile devices with limited RAM, but there is no enforced cap.

Does the tool store my images anywhere?

No. Compression happens entirely in your browser using the Canvas API. Your images are never transmitted to any server. There is nothing to log, nothing to store, and nothing to breach.

Should I compress images before or after resizing?

Resize first, then compress. Start with the correct pixel dimensions for your use case (e.g., 1200px wide for a blog header), then compress the resized image. Compressing first and then resizing can re-introduce quality loss from two separate lossy operations.

Compress Image

Compress JPG, PNG, SVG or GIF with the best quality and compression.

Secure processingNo signup required100% freeFiles deleted after 1 hour

Drop your images here

Select one image, or multiple for batch ZIP download

JPG, JPEG, PNG, GIF, SVG, WEBP, BMP, TIFF, HEIC, HEIFMax 200 MB · up to 10 files

What is Compress Image?

A single unoptimized DSLR photo can weigh 8–12 MB. Multiply that by 20 product shots and you have 200 MB of images slowing your site and clogging your inbox. Our compressor squeezes JPG, PNG, WebP, and GIF files down by 40–80% while keeping them visually identical to the originals, because it discards data the human eye cannot perceive, not the data that makes the image look good. The compression happens entirely inside your browser using the Canvas API and modern codec encoders. Your images are never uploaded to any server. You control the quality level with a slider, see a side-by-side size comparison before downloading, and can batch-process an entire folder of images in one session.

Why use this tool?

The quality slider gives you precise control: drag it to 85% for an imperceptible reduction that typically halves file size, or push it to 60% for aggressive compression on thumbnails where pixel perfection does not matter. PNG compression preserves the alpha channel (transparency) completely, no pixel data is altered, only internal metadata and chunk structure are optimized. Batch mode lets you drop an entire folder of images and compress them all to the same quality setting in one pass. Each file downloads with a "before / after" size label so you can verify the savings. No file size cap, no image count limit, no account needed.

Common use cases

Compress before uploading to a website, Google measures Core Web Vitals and unoptimized images are the single most common cause of poor LCP scores and slower page load times. Compress before emailing files that need to slip under a 25 MB attachment cap. Compress before archiving to cloud storage you pay for by the gigabyte. Compress before posting to Etsy, eBay, or any marketplace that has upload limits or recompresses images on its own servers. Web developers compress every image in a build pipeline; our tool does the same thing in one drag-and-drop step. E-commerce operators use it to standardize product image file sizes before bulk uploads to Shopify or WooCommerce.

Frequently asked questions

Will compression make my images look blurry or pixelated?: At 75–90% quality, the difference is invisible to the naked eye on screens and in print at standard viewing distances. Below 50%, you may begin to notice softness around sharp edges and text, and JPEG blocking artifacts in flat-color areas. Use the live preview to judge the exact quality-vs-size tradeoff before downloading.
How much smaller will my images get?: It depends on the image content. Photos with complex detail (landscapes, crowds, textures) compress less because the encoder needs more bits to represent fine detail. Images with flat colors (screenshots, logos, infographics) compress more because large uniform areas encode very efficiently. Typical savings at quality 80 are 40–80%, a 5 MB photo commonly compresses to 800 KB–1.5 MB.
Can I compress PNG files without losing transparency?: Yes. PNG transparency (alpha channel) is fully preserved during compression. The tool applies lossless optimization, removing embedded metadata, optimizing Huffman tables, and stripping unnecessary chunks, without touching a single pixel. The output PNG is smaller but visually and functionally identical.
What formats can I compress?: JPG, JPEG, PNG, WebP, and GIF are all supported. For JPG and WebP, quality is adjustable. For PNG, compression is lossless. For GIF, the tool optimizes the color palette and frame structure.
Is there a file size or image count limit?: No. Process one image or 100 images. Upload files of any size, the browser handles processing in memory. Very large files (30+ MB TIFF exports from a DSLR) may be slow to process on mobile devices with limited RAM, but there is no enforced cap.
Does the tool store my images anywhere?: No. Compression happens entirely in your browser using the Canvas API. Your images are never transmitted to any server. There is nothing to log, nothing to store, and nothing to breach.
Should I compress images before or after resizing?: Resize first, then compress. Start with the correct pixel dimensions for your use case (e.g., 1200px wide for a blog header), then compress the resized image. Compressing first and then resizing can re-introduce quality loss from two separate lossy operations.

Pro tips

1For e-commerce product images on white backgrounds, use quality 85, the flat background compresses very efficiently and the final file size is often 60–70% smaller with zero visible difference on product shots.
2When compressing images for a website, target 150–200 KB per image for non-hero images. Hero/banner images can be 200–400 KB. This keeps total page weight under 1 MB and dramatically improves Core Web Vitals scores.
3PNG screenshots of UI elements (sharp text, solid colors) often compress better in WebP format than in PNG. Use the "Save as WebP" option for UI screenshots destined for web use, same visual quality, typically 30–40% smaller than an already-compressed PNG.

How does it compare?

TinyPNG uploads images to their servers (privacy concern for confidential visuals) and limits the free tier to 20 images per month. Squoosh (by Google) is browser-based like ours but processes one image at a time. ImageAndPDF.com compresses images in bulk, in your browser, with no account, no watermark, and no monthly cap.

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