Resizebox - Bulk Image Resizer

ResizeBox is a free online image resizer and basic photo converter useful for quick single-image edits and modest batch jobs.

Quick Verdict

ResizeBox is presented as a free online image resizer and photo converter that handles common formats and offers a separate bulk workflow; someone might care if they need a fast, low-friction way to resize or prepare images for print or web. The website describes drag-and-drop uploads, a 20MB per-image limit, and batch processing for up to 50 files with a ZIP-ready output; the bulk tool also states "100% local processing" as a privacy claim. These are concrete conveniences, but verify privacy and retention details on the official site before sending sensitive images.

Key Features

• Drag-and-drop or click-to-upload interface for single images and a dedicated bulk tool.
• Supports JPG, PNG, GIF, WEBP for the main tools and lists AVIF support in the bulk workflow.
• Per-image upload limit of 20MB and a batch limit of up to 50 images.
• Batch options include applying one resize rule across a set, percentage scaling, file-size targets, and ZIP-ready outputs.
• Printing presets for specific US paper sizes (Letter, Legal, Tabloid, Executive, Ledger) with locked DPI, margins, and bleed according to the site description.
• The site describes advanced optimization and compression options for exports.

Who this is for

Best-fit users: individuals and small teams who need quick image resizing for web, social, or simple print prep; people preparing artwork, worksheets, posters, or stationery to common US paper sizes; and users who want to process modest batches (up to 50 images) without installing software.

One limitation/thing to verify: the website does not clearly state data retention, deletion policies, or technical security measures (encryption or third-party processors), so verify privacy, file retention, and any unpublished limits on the official site before using it for sensitive or large-volume work.

FAQ

Q: What file types and limits does ResizeBox accept?
A: The site lists JPG, PNG, GIF, WEBP (and AVIF in the bulk tool) and a maximum per-image upload size of 20MB; verify exact format behavior on the official site.

Q: Is batch processing private and local?
A: The bulk tool states "100% local processing" on the website; this is a positive trust signal but you should confirm details about where files are processed and retained on the official site.

Q: Can I use ResizeBox for print-ready files?
A: The site offers printing presets for several US paper sizes with locked DPI and bleed settings; it appears suited to common print prep, but the website does not clearly state exact DPI values or resolution caps—confirm those details before final print jobs.