Free Tool
Paste your post, drop in an image, and see live mockups across all 9 platforms. Catch truncation, hashtag styling, image crops, and link cards before you publish.
243 characters total
Just shipped a new feature. We replaced 5 spreadsheets with one tool that watches Reddit for high-intent posts. AI drafts the DM, we approve, then we send. Reply rate so far: 14% vs ~2% on cold email. Building in public. https://oneup.today
oneup.today
https://oneup.today
Your Name
Founder · 2m · 🌐
Just shipped a new feature. We replaced 5 spreadsheets with one tool that watches Reddit for high-intent posts. AI drafts the DM, we approve, then we send. Reply rate so far: 14% vs ~2% on cold email. Buildi... see more
oneup.today
https://oneup.today
Just shipped a new feature.
Just shipped a new feature. We replaced 5 spreadsheets with one tool that watches Reddit for high-intent posts. AI drafts the DM, we approve, then we send. Reply rate so far: 14% vs ~2% on cold email. Building in public. https://oneup.today
oneup.today
https://oneup.today
your_handle
1,247 likes
your_handle Just shipped a new feature. We replaced 5 spreadsheets with one tool that watches Reddit for high-intent posts. AI drafts th... more
your_handle2m
Just shipped a new feature. We replaced 5 spreadsheets with one tool that watches Reddit for high-intent posts. AI drafts the DM, we approve, then we send. Reply rate so far: 14% vs ~2% on cold email. Building in public. https://oneup.today
oneup.today
https://oneup.today
Your Name
2m · 🌐
Just shipped a new feature. We replaced 5 spreadsheets with one tool that watches Reddit for high-intent posts. AI drafts the DM, we approve, then we send. Reply rate so far: 14% vs ~2% on cold email. Building in public. https://oneup.today
oneup.today
https://oneup.today
@your_handle
Just shipped a new feature. We replaced 5 spreadsheets with one tool that watches Reddit for high-intent posts. AI drafts the DM, we approve, then we ...more
Just shipped a new feature.
Your Name · 2.4k views · 2h ago
Just shipped a new feature. We replaced 5 spreadsheets with one tool that watches Reddit for high-i ...show more
Just shipped a new feature.
Just shipped a new feature. We replaced 5 spreadsheets with one tool that watches Reddit for high-intent posts. AI drafts the DM, we approve, then we send. Reply rate so far: 14% vs ~2% on cold email. Building in public. https://oneup.today
your_handle
From OneUp Today
OneUp formats your post for all 9 platforms automatically: character limits, hashtag rules, link previews, image dimensions, schedule, and approval flow.
See multi-platform publishing →No. They are recognizable approximations meant to flag truncation, hashtag styling, image crops, and link cards before you publish. For final pixel-perfect screenshots, use the actual platform.
Switch between Free (280), Premium (4,000), and Premium+ (25,000) using the pills above the previews. The X card and the badge underneath update instantly. Other platforms are unaffected.
Instagram displays roughly the first 125 characters of a caption in the feed before "...more". Full captions can run up to 2,200. We highlight the visible cutoff.
Facebook collapses long posts at around 500 characters in the feed and shows "...See more". The hard limit is 63,206 characters, but most readers never expand.
The same image is rendered with each platform's native aspect ratio: 16:9 for X and YouTube, 1:1 for Instagram, 1.91:1 for LinkedIn and Facebook link cards, 4:5 for Threads, 4:3 for Reddit, 9:16 for TikTok, 2:3 for Pinterest. We use object-fit: cover, so a portrait image will be cropped on the sides for landscape platforms.
When your text contains a URL and there is no uploaded image, X, LinkedIn, Reddit, Facebook, and Threads render a link unfurl card. Upload an image to override the card on those platforms.
No. It only changes how the mockups are rendered, so you can preview both light and dark modes (most apps default to a user's system theme).
Yes. The previews are always free. The first 3 "copy formatted text" actions are free; sign up free with Google after that for unlimited copies.
