Resize & Compress Image — dimensions and weight in one pass

Most image jobs need both halves of the answer at once: the picture has to fit a box — 800 × 800, 1024 wide, a square for a form — and it has to fit a weight limit — under 100 KB for a government portal, under 2 MB for an estate-agent listing, under 50 KB for a signature scan. Doing one then the other means two round trips through a desktop program. This page does both in a single pass: you name the frame, you name the ceiling, and the file that comes out satisfies both.

Two modes drive the same engine. In By Pixels the image is redrawn at the width and height you type, with the aspect-ratio lock deciding whether the second number is calculated for you or ignored and the picture stretched. In By File Size the tool works the other way round: it searches JPEG quality, then trims the pixel dimensions if quality alone cannot reach the ceiling, and stops the moment the encoded file is at or below your target. Every attempt is a real encode, so the number you see on the result is the number the file actually has.

Drop twenty photos in and you get twenty files back plus a ZIP — no queue on a server, no per-day quota, no email link that expires. HEIC from an iPhone is decoded in the browser before anything else happens, so a batch can mix iPhone and Android sources. PNG keeps its transparency; JPG and WebP are flattened onto whatever background colour you choose.

Nothing is uploaded. The image bytes go straight from your storage into this tab's memory, the resized copy is created there, and when you close the tab the memory is released. The only network traffic on the page is the one-time fetch of the decoder libraries when you first press the button, pulled from a pinned CDN version.

• One pass for dimensions and weight
• Real encodes — the reported size is the file's actual size
• Quality search first, downscale second
• Batch any number of files into a single ZIP
• HEIC, PNG with alpha, JPG and WebP output
• No sign-up, no watermark, no upload

• Set the ceiling slightly below the portal's limit — many reject a file that is exactly at it because they count overhead.
• For a photo, dropping 20% of the width usually saves more KB than dropping quality to 60%.
• WebP at 80 typically beats JPG at 85 on weight; keep JPG when the receiver is an old form.
• Run the batch once with a copy of your worst photo before processing forty files.
• Keep the original — this page writes a new file and never touches what you opened.

Your files never leave your device — everything runs locally in your browser.