Image Resizer
Resize one image or upload many at once. Set exact dimensions, percentage, or a social media preset, choose your output format and quality, and download files individually or as a single ZIP. Everything runs in your browser — your images never leave your device.
500+ images resized
Drag & drop files here, Ctrl+V to paste, oror
Social Media Presets
One-click presets for Instagram, Facebook, X, LinkedIn, YouTube, Pinterest, and TikTok. Get the exact dimensions each platform requires without looking them up.
Full Control
Set exact pixel dimensions with aspect ratio lock, or scale by percentage. Choose JPEG, PNG, or WebP output and adjust quality from 10% to 100%.
100% Private
Your image never leaves your device. All resizing happens locally in the browser using the Canvas API. No server upload, no storage, no tracking.
How image resizing works
Image resizing changes the pixel dimensions of a photo by resampling — computing new pixel values from the original data. Downscaling (making smaller) averages groups of pixels and generally looks good. Upscaling (making larger) requires interpolation to fill in missing data, which can introduce softness. This tool uses the browser's high-quality bicubic interpolation for the best results in both directions. For analyzing the quality impact of resizing, run the result through the Quality Analyzer.
Batch resize & download as ZIP
Drop or select up to 50 images and the tool resizes them all with the same target dimensions, format, and quality settings. In pixels mode with aspect lock on, the width is fixed and each image's height scales proportionally to its own aspect ratio — no distortion. In percentage and preset modes the rule is applied to each file the same way. Each file is resized sequentially in your browser, with a live progress row showing the new dimensions, original size, resized size, and percentage saved per image. When everything finishes you get a one-click ZIP of every resized file, plus individual download links if you only want some of them. Because resizing runs locally — even in batch mode — none of your images is ever uploaded to a server, and the page works on slow connections or offline once loaded. For batch compression alongside resizing, pair this with the Image Compressor.
Social media image sizes
Each social platform has optimal image dimensions. Instagram posts perform best at 1080×1080, stories at 1080×1920, and landscape posts at 1080×566. Facebook recommends 1200×630 for shared posts and 820×312 for cover photos. X (Twitter) post images are 1200×675, headers 1500×500. LinkedIn posts use 1200×627, banners 1128×191. YouTube thumbnails are 1280×720. Pinterest pins work best at 1000×1500, and TikTok covers at 1080×1920. Using the wrong size causes cropping, letterboxing, or compression artifacts. This tool includes one-click presets for all major platforms. Before uploading to social media, consider removing metadata with the EXIF Remover to protect your privacy.
Resizing vs compression
Resizing changes the pixel dimensions of an image, while compression reduces file size by discarding visual data within the same dimensions. Both reduce file size, but they work differently. Resizing a 4000×3000 photo to 2000×1500 removes 75% of the pixels — dramatically cutting size while maintaining quality at the new resolution. Compression keeps all pixels but encodes them more aggressively, introducing artifacts at lower quality settings. For the smallest possible file, combine both: resize to the needed dimensions, then lower the quality slider. To check what metadata survives resizing, use the EXIF Checker.
Resizing for print
Print requires higher resolution than screen display. A good rule of thumb is 300 DPI (dots per inch) for high-quality print. An A4 page at 300 DPI needs an image of at least 2480×3508 pixels. For large-format posters, 150 DPI is usually sufficient. Before printing, check whether your image meets the required dimensions with the Print Readiness Scanner. For comparing the original and resized versions side by side, use Similarity Scanner. Explore all 88 image tools.
Resizing images is one of the most common tasks in photo editing, whether you need to resize an image online for a website, make a photo smaller for email, or prepare images for social media posting. This free photo resizer handles all standard formats — JPEG, PNG, WebP, GIF, and HEIC — and produces output at any custom dimension or percentage of the original. The aspect ratio lock ensures proportions are maintained when you change one dimension, preventing distortion. For batch resize jobs, drop up to 50 images at once and download every resized file as a single ZIP — the same target dimensions or platform preset is applied to each image in your browser.
A practical workflow for web and social media: start by checking the current file dimensions and format with the Image SEO Checker, resize to the target dimensions here, then reduce image file size further with the Image Compressor. If you need to crop to a specific aspect ratio before resizing — for example, square for Instagram or 16:9 for YouTube — use the Image Cropper first. For platform-specific dimension presets beyond what the resizer offers, the Social Media Resizer includes exact canvas sizes for every major platform. Note that Canvas-based resizing strips EXIF metadata from the output, so use the Metadata Editor to inspect what data remains after processing.
Guides for common resize targets: passport photo size, 2x2 inches, Instagram post, LinkedIn banner, and 600×600 pixels. Read our image resizer guide for tips, examples, and best practices.
Frequently Asked Questions
Can I resize multiple images at once?
Can I download all resized images as a ZIP?
Does resizing reduce image quality?
What social media size should I use?
Does this tool upload my image to a server?
What is the maximum image size?
What output formats are available?
Does resizing remove EXIF metadata?
Complete Image Preparation Workflow
Resizing is often part of a larger image preparation workflow. Depending on your end use — web publishing, social media, print, or file submission — you may need additional steps after resizing.
For social media, the Social Media Resizer has built-in presets for Instagram, Facebook, Twitter, LinkedIn, and YouTube dimensions. After resizing, run the image through the Image Compressor to meet file size limits — many platforms have upload caps between 50KB and 1MB. Need a different format? The Format Converter handles JPEG, PNG, WebP, and AVIF conversions.
For precise cropping before resizing, use the Image Cropper to set exact aspect ratios. If you are preparing product photos or ID images, strip metadata first with the EXIF Remover — resized images from smartphones still carry GPS coordinates and personal data that you may not want to share.