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Frequently Asked Questions
▸ Bulk Image Resizer FAQ
How do I resize multiple images at once?
Drag and drop or select all your images, choose a resize mode (by pixels, percentage, preset or longest/shortest side), then click Resize All. Every image is processed at once in your browser. Download them individually or all together as a ZIP. There is no limit on how many images you can resize at once.
Is this bulk image resizer free?
Yes, completely free with no limits on file size or number of images. There is no signup, no watermark, no paywall and no ads. Unlike many online resizers that cap free batches or require an account, this tool lets you resize unlimited images for free.
Are my images uploaded to a server?
No. This resizer runs 100% in your browser using JavaScript and the Canvas API. Your images never leave your device — you can verify this in your browser's network tab, where you will see zero outbound requests with your image data. It even works offline once the page has loaded.
What is the difference between fit, cover, stretch and pad?
Fit (contain) scales the image to fit inside your target box while keeping the aspect ratio — the output may be smaller than the box. Cover scales to fill the box and crops the overflow. Stretch forces the exact dimensions and may distort the image. Pad fits the image and fills the leftover space with a background colour so the output is exactly the target size.
Does resizing reduce image quality?
Downscaling (making images smaller) keeps quality high and reduces file size. Upscaling (enlarging) can soften an image because pixels are interpolated. Use the Don't enlarge option to prevent accidental upscaling. For JPEG and WebP output you can also set a quality level to balance file size against detail.
Can I resize images for Instagram, Facebook or YouTube?
Yes. The preset menu includes common social and web sizes such as Instagram square (1080×1080), Instagram story (1080×1920), Facebook post (1200×630), X/Twitter post (1600×900), LinkedIn post (1200×627), YouTube thumbnail (1280×720), Pinterest pin (1000×1500) plus 1080p/720p web sizes and square thumbnails.
Will resizing keep the aspect ratio?
Yes if you want it to. Turn on Lock aspect ratio and enter just a width or a height — the other dimension is calculated automatically so the image is never distorted. Percentage and longest/shortest-side modes always keep the aspect ratio. For exact dimensions that ignore the ratio, unlock it and pick a fit mode.
What image formats can I resize?
You can load JPEG, PNG, WebP, GIF, BMP and most browser-supported image formats. Output can be kept the same or converted to JPEG, PNG or WebP. Converting photos to WebP often produces much smaller files at the same dimensions.
Can I download all resized images together?
Yes. After resizing, click Download ZIP to get every resized image in a single archive, named with the new dimensions. You can also download any single image individually from its row.
Free Online Bulk Image Resizer — Resize Multiple Images at Once
This free bulk image resizer lets you resize many images in one go — by exact pixel dimensions, by percentage, or with ready-made presets for the web and social media. Whether you are shrinking a folder of photos for email, preparing product shots for a store, or batch-sizing graphics for a website, this tool handles every image at once, directly in your browser.
Why Use a Client-Side Batch Resizer?
Most online image resizers upload your files to their servers for processing, which raises privacy concerns and imposes batch limits. This resizer runs entirely in your browser using the Canvas API — your images never leave your device. Zero server uploads, zero data collection, zero limits on how many images you can resize.
Resize by Pixels, Percentage or Preset
Set exact width and height in pixels, scale every image by a percentage, or pick a preset such as 1080p, Instagram square, Facebook post or YouTube thumbnail. Lock the aspect ratio to avoid distortion, or unlock it and choose how mismatched images should fit: contain, cover (crop), pad (letterbox) or stretch.
Batch Resize & Format Conversion
Drop dozens of images at once and resize them all in seconds. Keep the original format or convert to JPEG, PNG or WebP while you resize. Set a JPEG/WebP quality level to control file size, then download everything as a single ZIP archive — each file named with its new dimensions.
Free Alternative to Online Batch Resize Tools
Unlike paid resizers that charge per image or cap free batches, this bulk image resizer is completely free with no restrictions. No signup, no watermarks, no ads. Resize as many images as you need, as often as you need — and pair it with the image compressor to squeeze files even smaller.