Resize Images Online Free — Batch, DPI, Format Conversion & More (2026)
AI summary: We built our Image Resizer to handle every common resizing workflow from a single interface. Batch upload multiple images, resize by exact pixels or percentage, set output format and quality, configure DPI for print, or use Target File Size mode that automatically adjusts quality to hit your goal file size. Download results individually or as a ZIP archive, all processed locally with no server upload.
To resize images without quality loss or server uploads, use FreeAIBox's Image Resizer. Upload your image, choose dimensions by pixels, inches, or centimeters, set DPI for print, or use Target File Size mode to hit a specific KB. Process multiple images at once, download as ZIP, and choose output format (JPEG/PNG/WebP/AVIF). Everything runs locally in your browser.
TL;DR
- Built batch processing for multiple images at once, available as individual downloads or ZIP archive.
- Supports resize by pixels, inches, centimeters, and percentage scale.
- Target File Size mode auto-adjusts compression to hit a specific file size (10–10000 KB).
- Output to JPEG, PNG, WebP, or AVIF with adjustable quality and DPI for print.
A guide to resizing images online for free using our browser-based tool, including batch processing, DPI/print support, target file size mode, and format conversion between JPEG, PNG, WebP, and AVIF — all without uploading to a server.
Di FreeAIBox Team (Team)
Why Image Resizing Still Matters in 2026
Image resizing is one of the most performed image tasks on the web, yet most free tools limit you to single-image workflows with no batch support, no print configuration, and no format conversion. We built our Image Resizer to handle all of these scenarios in one place — without uploading your files to any server.
Recommended FreeAIBox Tools
Our image tools work together for end-to-end image processing, all within the browser:
- Image Resizer (you are here) — Batch resize, DPI, target file size, format conversion.
- Image Compressor — Compress images with adjustable quality and preview.
- JPG to PNG / PNG to JPG — Convert between formats to optimize delivery.
- WebP to JPG / JPG to WebP — Switch to modern formats for smaller file sizes.
Step-by-Step Guide
- Open our Image Resizer tool on FreeAIBox in your browser.
- Upload one or multiple images by clicking the drop zone or by dragging them in; processing stays on your device.
- Choose resize mode: exact pixels, percentage scale, inches/centimeters with DPI, or Target File Size.
- Select output format (JPEG, PNG, WebP, or AVIF) and adjust quality if applicable.
- Optionally enable Do Not Enlarge to prevent upscaling beyond original dimensions.
- Download each image individually or click Download All as ZIP for batch results.
Resize Modes Comparison
| Mode | When to Use | Key Settings |
|---|---|---|
| Pixels | Exact web dimensions (social media, banners) | Width x Height in px |
| Percentage | Uniform scaling by ratio | 1–400% slider |
| Inches / cm | Print-ready images | DPI selection (72–600) |
| Target File Size | Hit a specific KB limit | 10–10000 KB target |
Output Format Guide
Each output format serves different needs. JPEG works well for photos where file size matters most. PNG is best for graphics with transparency. WebP is our recommendation for broad web delivery — it typically offers 25–35% better compression than JPEG at similar quality. AVIF offers the smallest file sizes but has narrower browser support.
Key Considerations
- Batch processing handles up to 10 images simultaneously with individual progress tracking.
- Target File Size mode uses binary search (up to 8 iterations) to find the ideal quality for your size goal.
- Do Not Enlarge prevents pixelation when source images are smaller than the requested output.
- DPI settings from 72 to 600 DPI cover both screen and print workflows.
- ZIP download uses JSZip to bundle all processed images without server interaction.
Related Concepts
References
- [1] MDN Web Docs: Image file type and format guide
- [2] Google Developers: WebP Image Format Overview
- [3] Netflix Technology Blog: AVIF Image Format Overview
- [4] Google Chrome Labs: Squoosh — Image compression web app that lets you compare formats at different quality levels
Frequently Asked Questions
Our batch mode supports up to 10 images at once in the browser. Each image is processed sequentially with a thumbnail grid showing progress for each file.