Image Compressor

Rule of thumb: photos tolerate lossy formats happily; screenshots and text-heavy images stay crisper in a lossless target.

An image compressor shrinks the file size of photos and graphics without requiring software installs or uploads. Modern camera and phone photos often weigh several megabytes each, which slows down websites, gets attachments rejected by mail servers, and fills up storage quickly. This tool re-encodes JPEG, PNG and WebP images inside your browser with the Canvas engine: drag a quality slider, optionally cap the longest side, and process many files in one batch. Every image shows its size before and after, plus the percentage saved, so you always know exactly what you gained. It is built for webmasters optimizing page weight, shop owners publishing product photos, bloggers adding images to posts, and anyone who has ever fought an email attachment limit.

What this tool can do

• Adjust compression with a quality slider, from aggressive to near-lossless, watching the resulting size update instantly
• Shrink JPEG, PNG and WebP files dramatically — often by 60 to 80 percent — while keeping visual quality
• Optionally downscale the longest side (for example to 1920 pixels) so oversized camera shots shrink twice: resolution and bytes
• Process a whole batch at once, with its own before and after size and savings readout for every file
• Keep the original format, or force JPEG, WebP or PNG output in the same run
• Download every result directly from the result grid

When you'll use it

• Speeding up a website by compressing hero images and product shots
• Sending a pile of holiday photos by email or messenger without hitting attachment limits
• Preparing catalog images for a marketplace that rejects files over a certain size
• Freeing up phone or computer storage without deleting the original moments
• Getting oversized images ready for social media, where huge uploads get cropped or rejected

Privacy and limits: every pixel is processed locally in your browser — your images never leave your device, nothing is uploaded, and there is no server-side copy or log to worry about. The output is a fresh re-encode, so pushing the quality slider very low softens fine details; for truly lossless edits keep the originals. Formats your browser cannot decode at all, such as HEIC or TIFF, belong to the cloud converter instead.

• Compression happens in your browser with WASM codecs — very large images (100 MP+) are bound by available memory, not by a server quota.
• Converting PNG transparency to JPEG flattens it onto white — keep PNG/WebP when alpha matters.
• Quality is not the only lever: resizing an oversized image usually saves more than aggressive quality cuts.