okay ottoTry Okay Otto

See your post on every platform.

Paste a caption and add a photo. See how each platform crops it, where it cuts your caption, and which limits you’d hit. Free, no sign-up, and nothing leaves your device.

  • Instagram

    Your photo

    0 / 2,200 caption

    0 / 30 hashtags

    Photos taller than 4:5 or wider than 1.91:1 are cropped to fit.

    Your profile grid shows each post as a 3:4 tile, cut from the middle.

  • Facebook

    Your photo

    No post limit in its docs

  • Threads

    Your photo

    0 / 500 post

    0 / 1 topic tag

    Threads takes one topic tag per post, not hashtags.

  • LinkedIn

    Your photo

    0 / 3,000 post

  • X

    Your photo

    0 / 280 post (standard accounts)

  • Bluesky

    Your photo

    0 / 300 post

    Bluesky shows the whole post; there’s no “more” cut.

  • Pinterest

    Your photo

    0 / 800 description

    Pinterest recommends 2:3 for Pins. The title is separate, up to 100 characters.

  • TikTok photo

    Your photo

    0 / 4,000 description

    The title is separate, up to 90 characters.

Okay Otto does this for every post.

Upload once. Okay Otto makes each platform’s version at its own shape, writes a caption that fits each one, and posts them all when you say okay.

Apply for the beta

Questions

What is the Instagram caption limit?
Instagram captions can be up to 2,200 characters with up to 30 hashtags. The feed shows about the first 125 characters before “more”.
What shape does an Instagram photo need?
Instagram feed photos can be from 4:5 (portrait) to 1.91:1 (landscape). Anything taller or wider is cropped. Your profile grid shows each post as a 3:4 tile.
How long can a Threads post be?
Threads posts can be up to 500 characters, with one topic tag.
How long can a LinkedIn post be?
LinkedIn posts can be up to 3,000 characters. The feed shows about the first 210 characters before “see more” on a computer.
Does my photo get uploaded?
No. The preview runs in your browser; your photo and caption never leave your device.

Limits come from each platform’s own documentation, checked October 2026. No platform publishes where its feed cuts a caption; those points are approximate and say where the figure comes from.