The Character Limit Blog
Everything you need to write better copy for every major platform — Instagram, Twitter/X, Google Ads, SEO and Amazon.
How Long Should Your Instagram Caption Be in 2025?
The data-driven answer — why 125 characters matters more than 2,200.
StrategyInstagram Hashtag Strategy 2025: How Many Should You Use?
The 30-hashtag era is over. Here's what the data says about optimal usage.
TipsInstagram Bio Tips: 150 Characters That Convert
Pack your value proposition and CTA into 150 characters on your profile.
AdsInstagram Ads Character Limits 2025: Every Field Explained
Primary text (125), headline (40), description (30) — all fields covered.
ReelsInstagram Reels Captions: Do They Actually Matter?
How Reels captions affect reach and what to write for each content type.
DMsInstagram DM Character Limit & Cold DM Templates That Work
The 1,000-char DM limit plus proven outreach templates that get replies.
Twitter/X Character Limit: The Complete 2025 Guide
280-char limit, URL counting, Premium limits and how to write better tweets.
ThreadsHow to Write Twitter Threads That Go Viral in 2025
Thread structure, hook formulas and endings — the full playbook.
ProfileTwitter/X Bio: How to Use Your 160 Characters Effectively
Convert profile visitors to followers with a bio that actually works.
AdsTwitter/X Ads Character Limits: Every Format Explained
Promoted tweets, website cards, app cards — all limits and best practices.
EngagementTweet Length vs Engagement: What the Data Shows in 2025
Is shorter always better? The data on tweet length might surprise you.
PollsTwitter/X Polls: Character Limits, Best Practices & Ideas
25-char poll options — how to write great polls that drive votes and replies.
Google Ads Character Limits: The Complete 2025 Guide
Every field — RSA headlines (30), descriptions (90), paths (15) with examples.
Headlines15 RSA Headlines That Actually Work (30 Chars Each)
A repeatable framework for writing all 15 RSA headlines in 30 characters.
CopyHow to Write Google Ads Descriptions in 90 Characters
Features vs benefits, CTAs, power words — the copywriting formula.
ExtensionsGoogle Ads Extensions: Character Limits & Best Practices
Sitelinks, callouts, structured snippets — every extension format explained.
Quality ScoreHow Ad Copy Affects Your Google Ads Quality Score
The link between your copy, landing page and QS — with a practical checklist.
PMaxPerformance Max Asset Limits: Ad Copy Guide for 2025
Headline (30), long headline (90), description (90), business name (25).
Meta Descriptions That Actually Get Clicks in 2025
Length, keywords, CTAs — the complete guide to high-CTR snippets.
Title TagsHow to Write Title Tags That Rank AND Get Clicked
60 characters, keyword placement, brand names — the definitive guide.
Open GraphOpen Graph Tags: Complete Guide for Better Social Sharing
OG title, description, image sizes for Facebook, LinkedIn, Twitter and WhatsApp.
Examples25 Meta Description Examples: Good, Bad, and Great
Real before-and-after examples from ecommerce, SaaS, blogs and local businesses.
CTRHow to Improve Your Google SERP Click-Through Rate in 2025
Title tags, rich snippets, schema markup — every lever for better CTR.
SchemaSchema Markup for Beginners: Get Rich Snippets in 2025
FAQ, HowTo, Product, Article schema — step-by-step for non-developers.
Amazon Listing Optimisation: The Complete 2025 Guide
Title, bullets, description, keywords — every field with strategy and limits.
TitlesHow to Write Amazon Product Titles That Rank and Convert
200-char limit, mobile truncation at 80 chars, keyword placement formula.
BulletsAmazon Bullet Points: 5 Formulas That Drive More Sales
500 characters per bullet — formulas that convert browsers into buyers.
KeywordsAmazon Backend Keywords: The 250-Byte Guide for Sellers
What to include, what to avoid, and how to find the right hidden keywords.
A+ ContentAmazon A+ Content: Limits, Best Practices and Templates 2025
Replace your description with rich modules — character limits per module type.
SEOAmazon SEO in 2025: How the A10 Algorithm Actually Works
Conversion rate, velocity, external traffic — the ranking signals that matter.