Image resizing and compression help
Dimensions and aspect ratio
Width and height are measured in pixels. Use a percentage preset, exact size, Fit inside, or Fill and crop. Turn on Never upscale to keep the result within the source resolution. Reducing pixel dimensions usually lowers file size; enlarging an image cannot restore missing detail.
Crop, rotate, and flip
Drag the visual crop frame, use an aspect preset, or enter exact crop values. Rotation accepts quarter turns or an arbitrary angle and expands the canvas so corners are not clipped; horizontal and vertical flip mirror the result.
PNG, JPEG, WebP, AVIF, and Auto
Palette PNG applies near-lossless colour quantization and keeps transparency. JPEG uses MozJPEG and a chosen background colour for transparent pixels. WebP uses libwebp when available. AVIF is used only when the browser can encode it and otherwise records a fallback. Auto encodes supported candidates locally and keeps the smallest actual file.
Effects and watermarks
Pixelate, grayscale, and threshold-based black and white effects are applied after crop, transform, and resize. Text or image watermarks are placed at the bottom-right with adjustable size and opacity. Inspect the generated file because effects and watermarks permanently change exported pixels.
Target file size
A target file size is a best-effort limit, not a promise of an exact byte count. The editor adjusts encoding quality and may need to reduce dimensions when the requested limit is too small for the image and selected format. Inspect the preview and reported output size before downloading.
Batch processing and ZIP downloads
Batch settings apply the chosen operations to each queued image. A single result can be downloaded as an image; multiple results can be packaged as a ZIP. Keep the tab open until processing and download preparation finish, and verify important outputs before deleting the originals.
Metadata and privacy
The editor can display common camera, date, author, and GPS fields when present. Every export is re-encoded locally and removes source metadata; the editor does not preserve it. Source images are not uploaded to the site.
Troubleshooting
If an image will not open or export, confirm that the file is a supported PNG, JPEG, or WebP image and is not damaged. For very large images or batches, close other memory-heavy tabs, process fewer files at once, or reduce dimensions first. If a target size causes unacceptable quality, choose a larger limit or different format.