Image Resize
Resize images in batch — without a desktop app
Drop multiple JPG, PNG, WebP or GIF files, set fixed width, height or frame, preview output dimensions and download a ZIP — all in your browser inside AZTools.
Free, no credit card · Processing runs in your browser — files stay local until you download
Why Image Resize on AZTools
Same dimensions for a folder of photos or thumbnails — beside your other tools, not a one-off resize website per batch.
Many files at once
Queue JPG, PNG, WebP and GIF — one set of settings applies to every image.
Three resize modes
Lock width, lock height or fit into a fixed frame.
Preview before export
See original vs output size for the selected image.
Download in one go
Resize all and grab a ZIP of every file.
A queue for bulk resizing
Add many images from drag-and-drop or the file picker. Browse thumbnails, remove individual files or clear the queue. Select an image to preview the output dimensions your current settings would produce.
- Multi-select upload supported
- Original and output size stats per image
- Per-image status: ready, processing, done or error
Width, height or fixed frame
Fixed width scales height from the original aspect ratio. Fixed height does the opposite. Fixed frame sets both dimensions — pair with fit mode to choose how the image lands in the box.
- Fixed width — set px width, height follows
- Fixed height — set px height, width follows
- Fixed frame — target width × height together
Fit inside or fill the frame
When using fixed frame mode, choose “fit inside” to scale without cropping or “fill frame” to cover the box — edges may crop like a background cover photo.
- Contain — entire image visible, letterboxing if needed
- Cover — fills the frame, may crop edges
- Only applies in fixed frame mode
Format, quality and ZIP download
Export as JPEG, PNG or WebP with a quality slider for lossy formats. Resize all with one action, review results and download individually or as a single ZIP archive.
- JPEG / PNG / WebP output
- Quality control for JPEG and WebP
- Download all as ZIP via JSZip
Browser-side, privacy-friendly
Images are resized with canvas in the browser — nothing is uploaded to a server to process. Default mode, dimensions and export options sync to your AZTools account for the next visit.
- Drag-and-drop zone with format hints
- Saved preferences for mode and export
- Clear errors when a file cannot be processed
REST API for defaults
Read and update saved resize preferences programmatically — mode, target width and height, frame fit and export format — useful for workflows that should open the tool pre-configured.
- getAppState and savePreferences endpoints
- Persist resize mode and export defaults
- Resize execution stays client-side in the app UI
Try Image Resize free on AZTools
Resize your first batch in minutes — no Photoshop, no upload-to-a-random-resize-site.