Three calculators for the questions everyone looks up once a month. No signup, no email, no watermark — and the safe zone checker never uploads your image anywhere.
Every number comes from the same place PostPop’s own renderer reads, so what a tool tells you and what the product draws cannot disagree.
Drop a 1080×1920 image and see exactly what Instagram, TikTok and YouTube Shorts draw over it. Runs in your browser — the file is never uploaded.
What size do I export?Every vertical format, the pixels that matter, and what each app covers with its own interface.
How many slides, at what ratio?Square or 4:5, how many slides each platform takes, and the one rule that quietly breaks a carousel.
OR SKIP THE MEASURINGIt writes the post and renders it inside the safe zone automatically — your colours, your fonts, your logo.
Start free →Most pages that rank for these questions make you hand over an email for the number, or watermark the template they let you download. That earns one address and loses the link, and links are the only thing a page like this is actually for. So everything here is on the page: the pixels, the overlay, the reasoning, and a plain statement of which figures a platform publishes and which are working values nobody certifies.
They also cost us nothing to keep true. Every number is read from the same constant PostPop’s renderer lays out against — not a copy, the same one. When a platform moves its reply bar, one edit fixes the product and the calculators together.