When image resizing is the right fix
Use resizing when the image dimensions are larger than the target layout needs. This is the most direct fix for oversized product images, blog illustrations, screenshots, and social assets.
Resize Images
Resize photos for websites, forms, email, or social posts. Pick a preset (1920px, 1080px, 50%) or enter custom pixels — all processing stays on your device.
Source Images Stay Local
85%
Drag & drop your images here
or click to browse, or paste (Ctrl+V)
Supports HEIC, HEIF, WebP, PNG, JPG, AVIF, BMP
How to Resize Images
1
Upload your images by dragging them into the box above, or click to browse.
2
Pick a size preset or enter custom dimensions.
3
Choose output format and quality, then download.
Best use cases for exact dimensions
Exact width and height are useful when a CMS, marketplace, or content editor expects a specific slot size. Presets help with quick downsizing, while custom dimensions help when your layout has strict requirements.
When resizing alone is not enough
If the image is still too large after resizing, combine resizing with format conversion or compression. The biggest gains often come from reducing both dimensions and transfer format overhead together.
Known limitations
Before converting, note these constraints:
- Output behavior follows format capabilities (for example transparency support and lossy/lossless rules).
- Final file size depends on source image content and selected quality settings.
- If compatibility is critical, choose broadly supported targets first (typically JPG).
Frequently Asked Questions
How do I change image resolution (pixel width and height)?
Use Custom mode and enter the target width and height in pixels (or a percentage). Resampling and re-encoding can change detail, so compare the result at its intended display size.
Can I resize images without installing software?
Yes. Add files in the browser, choose a preset or custom dimensions, then download. Nothing is uploaded to a server.
What resize presets are available?
PicShift offers Max 1920px (long edge), Max 1080px, 50% scale, and a Custom mode where you can enter exact pixel dimensions or a percentage.
Does resizing reduce image quality?
The result depends on the source, target dimensions, format, and quality setting. Compare visible detail and file size after resampling and re-encoding.
Can I resize and convert format at the same time?
Yes. You can change both the output format (JPG, PNG, WebP, AVIF) and the dimensions in a single step.
Why is the output file sometimes larger than the original?
Output can grow when a lossy source is written to lossless PNG, when codec or container overhead dominates a small image, or when the source is already efficiently compressed. Results depend on the image, format, and settings; no fixed saving is guaranteed. PicShift uses MozJPEG, OxiPNG, and libwebp-based workflows, but those implementation choices do not guarantee the smallest possible file. In compress mode, PicShift keeps the original when the generated result is larger. Learn more: https://picshift.app/docs/size-increase-explainer