Resize Image for Tumblr
Choose a Tumblr template for one image, from avatars and header banners to image posts, photoset panels, and inline post images.
Upload Your Image
Drag & drop or click to select your image (Max 20MB)
Supports JPG, PNG, GIF, WEBP formats
Multiple images? Resize them all at once
Got more images? Try Bulk Resize →
Related Resize Tools
Resize images in different units, formats, or file sizes — all in one place.
Resize Image
Custom width & height in pixels, inches, cm, or mm.
Bulk Image Resizer
Resize multiple images together and download everything in one ZIP.
Resize in Inches
Adjust image size in inches with DPI for printing.
Resize in Centimeters
Metric sizing for print and international formats.
Resize in Millimeters
Precise sizing for ID photos and official documents.
Resize for Printing
Optimize image size and DPI for high-quality prints.
Resize & Reduce Image
Resize dimensions and compress file size in one step.
Resize With Aspect Ratio
Resize or change image proportions for any layout.
Resize by Percentage
Scale images to 25%, 50%, 75%, 200%, or a custom percentage.
Built for Tumblr Blog Images
Use one Tumblr-focused workspace when blog identity, theme headers, dashboard posts, photosets, and inline visuals need different crops.
Blog Avatar Identity
Prepare an avatar around a face, character, or symbol that represents the blog, keeping its main shape clear rather than shrinking a complete illustration.
Header Atmosphere
Use the header banner canvas for a wider scene or design, preserving the mood of the blog while checking that the main subject survives the chosen crop.
Artwork Post Framing
Resize an image post with attention to the artwork's edges, captions, and composition, so preparing a smaller file does not accidentally remove part of the piece.
Photoset Panel Rhythm
Prepare a single photoset image using the existing preset, checking its crop against the other images you intend to arrange in your Tumblr post later.
Inline Illustration Size
Choose an inline post image for artwork that supports a written entry, reviewing labels and small details so the picture remains useful beside the text.
Graphic Edge Preservation
Export a screenshot, text edit, or flat-color illustration as PNG when crisp edges matter, and inspect the saved result before adding it to the blog.
Resize a Tumblr Image in 3 Steps
Upload one image, choose the Tumblr destination, and export a file matched to that blog placement.
Upload one image
Start with a portrait, blog header design, illustration, photoset panel, or screenshot that you want to include in a post.
Choose a Tumblr template
Choose the Tumblr image role and inspect the composition, keeping artwork borders, captions, and important details visible.
Resize and download
Download the result and check it in your blog theme or post editor, then arrange any photoset images in Tumblr yourself.
Ready to resize an image for Tumblr?
Pick the Tumblr format that matches your next avatar, header banner, image post, photoset panel, or inline visual and export one clean file.
Resize Image for Tumblr FAQ
Answers about Tumblr avatars, header banners, image posts, photoset singles, inline images, output formats, and crop review.
Resize Template includes Avatar, Header Banner, Image Post, Photoset Single, and Inline Post Image. Pick the use that matches your artwork. The presets prepare individual files; they do not change your blog theme or assemble a finished Tumblr post for you.
Not necessarily. A Tumblr theme can control how a header is displayed at different widths. Resize the source with room around the important subject, then inspect it on your actual blog. The tool's image preview does not reproduce every theme layout.
Review the full source and chosen crop before processing. If the artwork's frame or signature matters, keep it inside the visible area or use the fit controls. Avoid assuming that a different aspect ratio will preserve every edge automatically.
No. It prepares one image for a photoset workflow. Resize the other images separately, then arrange them in Tumblr yourself. Check the relationship between the crops so the sequence feels intentional and does not cut off subjects where panels meet.
Use it for a picture that supports a written post, such as a diagram, screenshot, or illustration. Review any labels after resizing. The preset changes the file dimensions; your blog editor and theme still determine how it appears within the text.
This page uses the still-image resize workflow and does not promise animation-preserving GIF output. For a still graphic, use a supported source format. If keeping every animation frame matters, choose a workflow designed for animated files.
PNG can preserve crisp edges in text and flat graphic areas, while JPG can suit photographic or textured artwork. Inspect the image at the size you expect readers to see. Resizing cannot repair lettering that was already blurry in the source.
Yes. The image is processed locally in your browser, then saved through the download page. Upload it to Tumblr when your post is ready. ResizeBox does not request your blog login, publish drafts, or make changes to the theme and post layout.
Popular resize presets
Jump to the most commonly used image sizes for your projects