Free Social Media Tools & Calculators
Supercharge your content workflow with our collection of 19 free micro-apps built for creators, marketers, and AI agent developers.
Use the right tool
Solve one content decision without opening a full workspace.
Find a posting window or estimate API workflow cost.
Draft captions, bios, handles, hashtags, and styled text.
Preview posts and clean watermark overlays before carrying work into ESER Create.
Agent Capability Explorer
Check what your AI assistant can do across 9 social platforms with limits and prompts.
Social Media Scorecard
Engagement rate calculator and audience distribution scorecard against 2026 benchmarks.
Instagram Username Checker
Test up to 20 handles against Instagram syntax rules, then check availability live.
AI Watermark Remover
Clean badges and watermark overlays from AI images and video frames for crisp distribution.
YouTube to Markdown Converter
Convert YouTube videos and transcripts into clean AI-ready Markdown with frontmatter.
Hashtag Generator
Generate relevant trending hashtags for maximum organic reach across 5 platforms.
Instagram Caption Generator
Create engaging, high-converting captions with AI formatting and hook options.
Instagram Font Generator
Convert plain text into bold, cursive, or aesthetic Unicode font styles.
Twitter Character Counter
Official 280-char X algorithm counter with automatic thread splitting.
LinkedIn Text Formatter
Format bold/italic Unicode text with live "...see more" cutoff preview.
Instagram Line Break Generator
Format clean paragraph breaks that survive Instagram mobile app without collapsing.
Social Media API Cost Calculator
Calculate API token costs for multi-platform scheduling and AI video rendering.
Instagram Bio Generator
Craft aesthetic, keyword-optimized Instagram bios for your profile.
Aesthetic Username Generator
Discover unique, available username ideas for Instagram and TikTok.
TikTok Username Ideas
Generate catchy, brandable TikTok handle recommendations.
Best Time to Post Calculator
Find optimal posting times for your target audience time zone.
Social Post Preview
Preview how your post will render on LinkedIn, Twitter/X, Instagram, and YouTube.
Claude Skills Pack
7-Skill Pack for Claude, Cursor, and AI Agents to automate social content.
Social Media Posting Limits
Compare platform daily caps, API limits, and safe scheduling thresholds across 9 networks.
When one useful result becomes a repeatable workflow.
Copy a free-tool result into ESER Create, adapt it by platform, attach media, review it in context and place it on the calendar. The tools stay free; an ESER account connects the rest of the process.