JPG Resizer
Resize
Enter one value and the other follows automatically while locked.
Saves the edited image at its current dimensions. JPG, PNG, and WebP keep their format; other supported inputs download as JPG. Check the downloaded file for final quality.
Your images are processed locally in your browser and never uploaded to any server.
Resize and download one JPG photo at a time with aspect-ratio locking and quality control. Phone photos often contain more pixels than a web page needs; sizing them for their display can reduce file size as well as dimensions.
Compression reduces the bytes used to store an image, while downscaling reduces its pixel count. Resizing a 4000-pixel-wide photo proportionally to 800 pixels leaves one twenty-fifth of the pixels, though the byte saving depends on the image and encoding settings. It also removes source detail, so keep the original for larger displays or future edits.
How to use the jpg resizer
- Add one JPG photo.
- Set the new width/height or a scale percentage, then click Apply resize.
- Choose output quality and review the resized preview.
- Click Download to save the resized JPG. Repeat for another photo.
Pick a width, then set quality
Start from where the photo will live. A full-width banner wants about 1920px across, an in-article photo 800–1200px, and a thumbnail or card 400–800px. Enter that width with the aspect ratio locked and the height follows automatically, so the proportions never drift.
Click Apply resize, then choose the JPG quality for the re-encode. Around 85 can be a useful starting point for photographs, but visible artifacts and file size depend on the source. Check fine textures and edges at the intended display size. Resize from the original rather than a previously saved JPG to avoid accumulating compression loss.
Frequently asked questions
What resolution do websites need?
Typical starting points are 1920px wide for heroes, 800–1200px for content photos and 400–800px for cards. Account for high-density screens. Scaling a 4000px-wide photo proportionally to 400px leaves 1% of its pixels, not necessarily 1% of its bytes.
Is resizing a JPG lossy?
Yes. Downscaling removes pixels and source detail, and JPG re-encoding can add compression artifacts. A higher quality setting may reduce those artifacts but cannot restore discarded detail. Resize once from the original to avoid repeated compression loss.
How do I resize without losing quality?
There is no lossless downscaling guarantee. A smaller JPG may still look good at its intended display size, but fine detail can disappear. Keep the original, choose sufficient dimensions and inspect the result before downloading. Upscaling does not recover missing detail.