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Image Resizer

Resize one or many images with custom pixels, percentage scale, or social presets—batch export to PNG or ZIP in your browser.

Free · private · batch-ready

Resize images online—with presets or exact pixels

Upload one file or many, pick custom dimensions, a percentage scale, or ready-made social sizes. Preview updates live; export PNGs or a ZIP without sending files to our servers.

Ideal for carousels, profile art, headers, and thumbnails when every pixel counts. Switch between images from the strip, apply settings once or to the whole batch, then download when you are done.

How to use image resizer

Upload your images

Choose one or more files or add more later. Thumbnails appear in a strip; the selected image shows in the canvas with a bold indigo border.

Pick a resize method

Use custom width and height (with optional aspect lock), drag the percentage slider, or tap a social preset to set output size.

Apply & download

Apply resize to lock in the current image, use Apply to all when multiple files need the same recipe, then download PNG or ZIP.

Supported file formats

Common browser image types load in the workspace. Exports are high-quality PNG.

  • PNG
  • JPEG / JPG
  • WebP
  • GIF

Key features

Three resize modes, multi-select, live preview dimensions, and ZIP export for stacks of files.

  • Multi-image strip

    Add several photos, pick an active thumbnail, or remove shots from the queue with one tap.

  • Custom, percent, presets

    Combine pixel-perfect sizing, proportional scale, and one-tap social templates in one tool.

  • Live target readout

    Original and output dimensions stay visible under the preview while you tweak settings.

  • Apply to one or all

    Commit the current recipe to the selected image, then batch-apply when you need consistency.

  • PNG & ZIP downloads

    Single exports as PNG; multiple processed files bundle into a ZIP for fast handoff.

  • In-browser processing

    No account required; resizing runs on your device for this native OneFrameLab experience.

Common use cases

  • Social profile & cover art

    Jump to Instagram, Facebook, LinkedIn, Pinterest, or YouTube preset sizes so crops match platform specs.

  • Batch downscaling

    Shrink many photos by the same percentage before email, CMS uploads, or archive-friendly copies.

  • Exact pixel delivery

    Type width and height for ads, UI assets, or print-adjacent workflows with optional aspect lock.

  • Private client previews

    Resize locally in the browser—helpful when originals should not leave your machine pre-export.

Pro tips

  • Start from percentage for quick uniform shrink, then switch to custom pixels for final polish on hero images.
  • When aspect lock is on, edit width or height—the other dimension follows your original photo proportions.
  • After Apply resize, switch thumbnails to confirm each output before downloading the ZIP.
  • Very large originals may take a moment to decode; wait for dimensions to appear before applying.

Frequently Asked Questions