Bulk Image Resizer
Apply one resize rule to a mixed batch, inspect each result, and download everything as a ZIP.
- Runs in your browser
- No image upload
- Review before download
Images and ZIP stay in your browser. Re-encoding may remove EXIF, ICC, XMP, and camera metadata; JPEG orientation is normalized into the output pixels.
How to resize multiple images at once
Add up to 20 images, choose one shared size rule, and start the batch. Check each result before downloading files individually or together as a ZIP.
How bulk resizing works
One sizing rule is applied independently to every queued image. A failed file does not stop the remaining files.
What bulk image resizing does
Resize multiple existing images consistently without setting dimensions on every file. Results keep their own filenames with a size suffix.
Fit within vs exact dimensions
Fit within keeps each image inside a bounding box. Exact dimensions lets you Fit, center Crop, or Pad to a requested canvas.
Portrait and landscape images
A 4000×3000 landscape image becomes 1200×900 and a 3000×4000 portrait becomes 900×1200 in the default 1200×1200 Fit within box.
Resize by width
Set a maximum width; height is calculated from each image’s own aspect ratio.
Resize by height
Set a maximum height; width is calculated from each image’s own aspect ratio.
Resize by percentage
Scale every image relative to its own dimensions. A percentage above 100% explicitly enlarges pixels but cannot restore detail.
Resize by longest edge
Set a maximum for each image’s longest side; the other side follows its original ratio.
When to use Crop
Exact Crop fills the requested width and height by trimming edges from the center. Use the homepage Image Resizer when an individual image needs precise framing.
When to use Pad
Exact Pad preserves the whole image on a fixed-size canvas. Choose transparent PNG/WebP, white, black, or a custom background; JPG uses an opaque background.
Prevent accidental enlargement
Fit, width, height, and longest-edge rules leave smaller images at native pixel dimensions by default. Exact Crop may enlarge source pixels and is clearly labeled.
JPG, PNG, and WebP output
Keep each source format by default. Advanced options can convert the whole batch to JPG, PNG, or WebP; PNG has no fake quality control.
Download as a ZIP
Download each result or build a local store-mode ZIP. Duplicate filenames receive unique suffixes so no result overwrites another.
Metadata and orientation
Re-encoding may remove EXIF, ICC, XMP, and camera metadata. JPEG orientation is applied to pixels before resizing.
Browser-local privacy
Decoding, resizing, encoding, preview, and ZIP creation happen in your browser. Image bytes are not sent to PicRecast or an external processing service.
Bulk Image Resizer FAQ
How many images can I resize at once?
Up to 20 images with 128 MiB of total source files. ZIP output is capped at 128 MiB.
Can I mix JPG, PNG and WebP?
Yes. Upload JPG/JPEG, static PNG, and static WebP together. Each keeps its original format unless you choose a common output format.
Will portrait and landscape images be distorted?
No. Fit within, width, height, longest edge, and percentage preserve each image’s aspect ratio.
Can I resize everything to the same exact dimensions?
Yes. Exact Crop and Pad produce the requested canvas size. Exact Fit may produce a smaller result to keep the whole image visible.
What is the difference between Fit, Crop and Pad?
Fit preserves the whole image within the box. Crop fills exact dimensions by trimming edges. Pad keeps the whole image on an exact background canvas.
Can I resize by percentage?
Yes. Each image is scaled relative to its own dimensions. Above 100% is an explicit upscale and does not add detail.
Can I set only width or height?
Yes. Use Width only or Height only; the other dimension is calculated automatically.
Will smaller images be enlarged?
Not in the default Fit within, width, height, or longest-edge modes. Percentage above 100% and Exact Crop can enlarge source pixels when explicitly selected.
Can I convert formats while resizing?
Yes. Advanced options let you output the whole batch as JPG, PNG, or WebP; keeping source formats is the default.
Does resizing reduce file size?
Often, but not always. The actual before and after byte sizes are shown for each result.
Is metadata preserved?
Re-encoding can remove EXIF, ICC, XMP, and camera metadata. JPEG orientation is normalized into pixels.
Can I download everything as one ZIP?
Yes. Completed results can be downloaded as one store-mode ZIP, up to 128 MiB.
Are images uploaded?
No. Image decoding, resizing, encoding, and ZIP generation run in your browser.
What happens if one image fails?
That item shows an error. Other queued images continue; you can retry or remove the failed item.