The Posted Once Blog
Practical guides on scheduling, posting at the right time, and growing on every platform.
Bluesky Image Size Guide 2026
Bluesky allows up to 4 images per post at roughly 1MB each. Full image size guide covering posts, avatars, and banners.
2 min read
Bluesky Banner and Avatar Size 2026
Bluesky banner size is 3000x1000px at a 3:1 ratio, and avatars work best at 1000x1000px. Full specs and safe zone tips inside.
3 min read
Bluesky AT Protocol Rate Limits 2026 (Full Breakdown)
Bluesky's current API rate limits: 5,000 points per hour, 35,000 per day, plus the 3,000 request per 5 minute HTTP cap, explained.
3 min read
Bluesky Character Limit 2026 (300)
The Bluesky character limit is 300 per post as of 2026. How it's counted in graphemes, what happens if you go over, and how to fit more using threads.
3 min read
Facebook Cover Photo Size Guide 2026
Facebook cover photo dimensions for 2026: exact desktop and mobile sizes, the safe zone that keeps content visible, and the ideal upload size.
4 min read
Instagram Character Limit 2026 (2,200 Caption)
Instagram's character limit is 2,200 characters per caption in 2026. What actually shows before the 'more' cutoff on mobile, and how the bio limit differs.
4 min read
Instagram Hashtag Limit 2026: Now Just 5
Instagram's hashtag limit dropped from 30 to 5 per post in December 2025. What changed, why it happened, and how to adapt your hashtag strategy now.
4 min read
Twitter (X) Character Limit 2026 (280 or 25K)
The X character limit is 280 characters for free accounts and up to 25,000 for any paid tier in 2026. Full breakdown of posts, bios, DMs, and link handling.
4 min read
Instagram Profile Picture Size 2026
Instagram profile picture size for 2026: the real minimum, the recommended upload size for sharp display, and why edges get cropped in the circle.
4 min read
Instagram Story Dimensions 2026 (1080x1920)
Instagram Story dimensions for 2026 are 1080x1920 pixels at 9:16, plus the safe zone at top and bottom you need for text, logos, and stickers.
4 min read
YouTube Video Dimensions 2026 (16:9)
YouTube video dimensions for 2026: 1920x1080 landscape for regular video uploads versus 1080x1920 vertical for Shorts, plus resolution guidance for both.
4 min read
Twitter (X) Header Image Size 2026
The X header image size is 1500x500 pixels in 2026. Why the bottom-left corner needs to stay clear and the exact file size limit to stay under.
4 min read
Facebook Character Limit 2026 (63,206)
Facebook's post character limit is 63,206, but visible text truncates much earlier. Every Facebook text limit in one table, checked July 2026.
3 min read
LinkedIn Character Limit 2026 (3,000 Post)
LinkedIn's post limit is 3,000 characters, but the feed cuts posts off around 140 to 210 characters first. Every LinkedIn limit in one table.
3 min read
Threads Character Limit 2026 (500 or 10K)
Threads posts are capped at 500 characters, but a 2025 text attachment feature adds up to 10,000 more characters on top. Every limit in one table.
3 min read
TikTok Character Limit 2026 (2,200 Caption)
TikTok's caption limit is 2,200 characters for standard video posts in 2026. The real nuance behind the 4,000 number you may have seen, verified.
3 min read
YouTube Character Limits 2026 (Title, Description)
YouTube's title, description, and tag limits in one table: 100, 5,000, and 500 characters combined, each one double checked again in July 2026.
3 min read
Bluesky Bio Character Limit 2026 (256)
Bluesky's bio character limit is 256 characters as of 2026, confirmed this session. How that compares to other platforms and how to use the space well.
3 min read
Facebook Hashtag Limit 2026 Explained
Facebook has no enforced hashtag limit, but that's not really the point. Here's the real 2026 guidance on how many hashtags you should actually use.
3 min read
Facebook Image Size Guide 2026
Current Facebook image dimensions for feed posts, cover photos, and profile pictures in 2026, plus why portrait now beats square.
4 min read
Facebook Video Length Limit 2026 (Reels Update)
How long a Facebook video can be after the 2025 Reels merge, with the real length caps for feed, Reels, Stories, and Live.
4 min read
Facebook Native Scheduling Limit 2026
How far in advance you can schedule a Facebook post through Meta Business Suite in 2026, plus the daily post cap most people miss.
4 min read
Instagram Native Scheduling Limit 2026 (75 Days)
Instagram's real native scheduling limits for 2026: a 75-day advance window and a 25-post daily cap, and what happens when you hit them.
4 min read
Google Business Photo Size Guide 2026
The exact Google Business Profile photo requirements for 2026: recommended size, minimum size, and file size limits, straight from Google.
3 min read