SocialBlaze.ai

Free social media image tool

Free Tumblr Image Resizer

Prepare images for Tumblr photo posts and your avatar. Blog themes can display images differently.

1Choose your image2Frame your format3Download or save

JPG, PNG or WebP · Up to 15 MB / 40 megapixels. Or try the sample.

If an export exceeds this preset’s file-size limit, choose JPG. Your dimensions stay exact.

Sample artworkLive preview

Downloads are free. Saving to Content Library requires an eligible plan. Images stay in your browser until you choose to save.

Make it fit. Make it yours.

Bring your image and next post together in SocialBlaze.

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Tumblr image sizes, ready to use

These are practical working sizes. Platforms may crop images differently across devices, placements and publishing methods. Review the final preview before posting.

Photo post · portrait — 1280 × 1920 px

A practical portrait layout; Tumblr theme layouts can vary. Export one image at a time; carousel presets create individual cards.

Photo post · square — 1080 × 1080 px

Use this export as a starting point, then check your platform’s final preview. Export one image at a time; carousel presets create individual cards.

Photo post · landscape — 1280 × 720 px

Use this export as a starting point, then check your platform’s final preview. Export one image at a time; carousel presets create individual cards.

Avatar (profile picture) — 800 × 800 px

Keep faces and logos centered for circular crops. Export one image at a time; carousel presets create individual cards.

Can I save on Free Forever?

You can download your image without an account. Content Library keeps its existing plan access; creating a Free Forever account does not unlock library storage.

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