Free tools

Useful free tools for short-form creators.

Calculators, analyzers, and checkers that solve a specific creator problem in under 30 seconds. 100% free, no signup, no email capture — they run entirely in your browser.

Content Repurposing ROI Calculator

Enter your weekly recording hours and what an editor would cost. The calculator shows clips per month, time saved, dollar value vs hiring, and break-even vs paying a $4–8K/month editor or agency.

Short-form Hook Analyzer

Paste the first line of your short-form post. The analyzer scores hook strength on length, specificity, hook-pattern detection, and emotional weight — and tells you exactly which pattern your hook fits and how to strengthen it.

Best Time to Post Calculator

Pick your timezone and your target audience timezone. The calculator surfaces the engagement-peak windows for each major platform — when feed traffic is highest and when the algorithm is most likely to seed your post broadly.

Niche Hashtag Generator

Enter your niche and audience type. The tool generates platform-native hashtag sets with the right mix of broad / mid / niche tags and respects each platform's algorithm preferences (TikTok rewards 3–5 specific tags; Instagram penalises spam stacks above 10).

Video Title Analyzer

Paste a video title. The analyzer scores expected click-through rate based on length, specificity (numbers, dollar amounts, time references), curiosity hooks, and platform-native pattern detection (YouTube-style payoff vs TikTok-style cold-open).

Multi-Platform Caption Length Checker

Paste a caption draft. The checker shows character count vs each platform’s hard limit, plus the "above-the-fold" cutoff (the first portion that shows in feed without "see more"), so you know whether your hook lands before the truncation.

AI Thumbnail Generator

Type a headline, pick colors, choose a layout (16:9 YouTube, 1:1 Instagram, 1200×627 LinkedIn). The generator highlights one keyword automatically so every thumbnail has a visual anchor — and renders at full export resolution server-side.

Video Aspect Ratio Converter

Enter your source resolution (e.g. 1920×1080), pick the target aspect ratio, and get the new dimensions plus an FFmpeg `crop=` filter you can paste straight into a terminal. No upload — pure math, runs entirely in your browser.

Subtitle (.srt) Generator

Paste your transcript and the total video duration. The generator splits the text into reasonable subtitle cues (max 42 chars per line, 1-2 lines per cue) and times them evenly across the video. Download the .srt and upload it to any platform.

Transcript-to-Clips Hook Detector

Paste a long-form transcript (podcast, interview, webinar). The detector scans every passage for hook patterns — questions that open loops, statistics that anchor curiosity, belief-reversal openings, imperative commands — and ranks the strongest 5–10 candidates by estimated short-form virality. Zero AI cost, runs entirely in your browser.

YouTube Description Generator

Paste your video topic, niche, and 2–3 talking points. The generator outputs a YouTube description structured for SEO: 150-character hook, timestamps placeholder, tags section, CTA block, and channel-info footer. No signup, no AI cost.

Instagram Caption Generator

Type your post topic, pick a voice (casual / professional / witty / contrarian / educational), and get 5 caption variants. Each variant has a different hook style (question / statement / contrarian take / list / story). Includes hashtag suggestions.

Social Media Bio Generator

Type your niche (what you do), your audience (who you help), and your CTA (newsletter / product / DM). The generator outputs 5 bio variants tuned to each platform: TikTok (80 chars), IG (150 chars), X (160 chars), LinkedIn (220 chars headline + 2,000-char about).

Reels Idea Generator

Pick a niche (fitness / SaaS / coaching / podcaster / agency / etc.) and the generator outputs 20 Reels/Shorts concepts. Each concept includes a hook, visual treatment direction (talking head, screen-record, B-roll), and a fill-in-the-blanks caption template.

YouTube Script Generator

Type a topic + pick a video length (Short / 5 min / 10 min / 20+ min) + style (talking head / tutorial / story / contrarian). The generator outputs a 5-beat structure with retention triggers placed where they actually matter.

X / Twitter Thread Generator

Type your thread topic + pick a style (listicle / story / contrarian / case study / framework). The generator outputs a 5-7 tweet thread with the hook tweet engineered for >2% engagement, body tweets ≤270 chars, and a CTA tweet at the end.

LinkedIn Post Generator

Type your post topic + pick a voice (operator / founder / consultant / employee / thought-leader). The generator outputs a 4-paragraph LinkedIn post with the kind of line-break rhythm and concrete language that actually breaks engagement, not the generic "thrilled to share" template.

Newsletter Subject Line Tester

Paste your subject line + pick your audience. The tester scores 0-100 on five dimensions (length, power-words, urgency-vs-curiosity balance, emoji weight, specificity) and suggests 3 rewrites that fix the lowest-scoring dimension.

Content Calendar Generator

Pick a niche + posting cadence (3x/week, 5x/week, daily) + platforms (TikTok / IG / LinkedIn / X / YouTube). The generator outputs a 30-day calendar with daily post type, hook idea, and platform assignment. Export as markdown.

Engagement Rate Calculator

Enter your follower count + likes / comments / shares / saves on a recent post. The calculator outputs your engagement rate as a percentage AND positions it against the 2026 industry benchmark for that platform (TikTok ~5.8%, IG ~1.7%, X ~0.5%, LinkedIn ~3.2%).

Podcast Episode Title Generator

Type your episode topic + pick a style (interview / solo monologue / topic deep-dive / Q&A / case study). The generator outputs 10 title variants, each using a different pattern (curiosity gap, specific number, contrarian claim, framework promise, "with [name]" interview format).

Email Subject Line Generator

Type your email topic + pick the audience (cold outreach / newsletter / transactional / sales follow-up / re-engagement). The generator outputs 10 subject line variants under 50 characters AND a matching preview text for each.

Blog Post Idea Generator

Pick a niche + describe your audience. The generator outputs 20 blog post title ideas covering 5 angle types: listicle, how-to, contrarian, case study, comparison.

YouTube Title Generator

Type your video topic + pick a style. The generator outputs 10 title variants ≤60 chars, each using a different click-through pattern (curiosity, number, contrarian, framework, story, etc.).

TikTok Caption Generator

Type your TikTok topic + pick a voice. The generator outputs 5 caption variants ≤300 chars, each pairing a hook style with TikTok-tuned hashtags.

Pinterest Pin Description Generator

Type the pin topic + niche. The generator outputs a Pinterest pin description ≤500 chars optimized for Pinterest search (not generic SEO) — keyword in first 50 chars, action-oriented closing, hashtag-light.

Freelance Creator Pricing Calculator

Enter your income goal + billable hours per month + overhead. The calculator outputs minimum project rate, hourly rate, and retainer rate that hit your income goal after overhead.

Sponsorship Rate Calculator

Enter follower count + engagement rate + platform. The calculator outputs the industry-standard sponsorship rate using 2026 creator economy benchmarks: typically $10 per 1,000 followers on IG, $20-30 on YouTube, $5-15 on TikTok depending on engagement.

Content Marketing ROI Calculator

Enter monthly content hours + your hourly value + outputs published + conversion rate to leads. The calculator outputs ROI, payback period, and content-driven CAC.

YouTube Watch Time Calculator

Enter avg view duration + uploads per month + projected views per video. The calculator outputs estimated months to hit the 4,000 public watch hours threshold needed for YouTube Partner Program.

Podcast Show Notes Generator

Type episode topic + guest + 3 takeaways. The generator outputs show notes with: SEO-optimized intro paragraph, key takeaways block, timestamp placeholder, guest bio, 3 social pull-quotes ready for X/LinkedIn.

Podcast Intro Script Generator

Type show name + niche + episode topic. The generator outputs a 30-second intro script structured as: 7-second hook, sponsor read placeholder (10s), episode tease (13s).

Podcast Outro Script Generator

Pick a primary CTA (subscribe / review / newsletter / product). The generator outputs a 20-second outro: CTA + thank-you + next episode tease.

Transcript Chapter Generator

Paste a timestamped transcript. The generator clusters by topic shifts and outputs YouTube-compatible chapter markers (0:00 - Intro / 2:30 - Topic 1 / etc.).

Podcast Episode Length Calculator

Enter word count + speaking rate (default 150 WPM). The calculator outputs estimated episode duration. Useful for pre-recording length planning.

Social Media Image Sizes 2026

A reference grid of current image dimensions for every major social platform surface. Filter by platform; copy spec for the format you need.

Tweet Character Counter

Paste or type your tweet. The counter shows live character count + remaining + warns when you cross 270 (the RT headroom threshold).

LinkedIn Headline Tester

Paste your current LinkedIn headline. The tester scores 0-100 on positioning clarity, keyword density (for recruiter search), and character usage (220 max).

YouTube Tag Generator

Type video topic + niche. The generator outputs 15 YouTube tags structured as: 5 primary (high-volume), 5 related (semantic), 5 long-tail (specific intent).

Blog Headline Analyzer

Paste a blog headline. The analyzer scores 0-100 across CTR (length, power-word density, number presence), SEO (keyword usage, position), and emotion (sentiment intensity).

Readability Score Checker

Paste any text. The checker outputs Flesch-Kincaid grade level, reading ease, average sentence length, and flags for: passive voice, long sentences (>25 words), and adverb density.

Clip Length Optimizer

Enter source video length + niche. The optimizer outputs how many clips you should pull and the ideal duration range per platform, based on 2026 algorithm retention curves.

Podcast Clip Multiplier

Enter episode length + episodes per week + content density. The multiplier outputs how many shorts you can realistically extract per episode, total repurposed minutes per month, and the reach multiplier vs publishing only the long-form.

Content Repurposing Matrix

Pick source type (podcast / long video / blog post / webinar) + length. The matrix outputs 20+ derivative asset suggestions across 8 surfaces with effort score (1-5) and reach potential (1-5) per asset.

Viral Moment Pattern Tester

Paste a 50-500 word transcript chunk. The tester scores it 0-100 across 5 viral patterns: curiosity gap, contrarian take, emotional peak, data drop, story hook. The composite score is the average of the 5.

Shorts vs Long-Form Revenue Comparator

Enter monthly views + niche + your shorts-vs-long-form split. The comparator outputs estimated monthly revenue per format using 2026 niche RPM data, plus a projection for the optimal split.

Creator Time Savings Calculator

Enter target clips per month + your current edit time per clip. The calculator outputs hours/week required manually vs minutes/week with AI clipping, plus the dollar value saved at your hourly rate.

Podcast Clip Prep Worksheet

Enter episode topic + 3 key takeaways. The worksheet outputs a structured pre-edit guide: "look for these patterns", timestamp hunting checklist, hook templates per takeaway, and a moment-scoring rubric.

Publishing Cadence Planner

Enter source content cadence (e.g. 1 podcast/week) + goal (growth/maintenance) + team size. The planner outputs a weekly posting schedule across TikTok, Reels, Shorts, LinkedIn, X with platform-specific best-time recommendations.

Video Script Formatter

Enter topic + platform + target duration. The formatter outputs a structured script template with hook (0-8s), context (8-20s), body (20-Y%), climax (Y-Z%), and CTA (Z-end). Word-count guide per section.

Video Hook Template Library

Browse 30 viral hook templates organized by pattern (curiosity gap, contrarian take, story hook, data drop, question). Pick a pattern + your topic → personalized hook variants. Distinct from hook-analyzer (which scores existing hooks).

YouTube Chapter Formatter

Paste rough chapter list (one per line). The formatter outputs a YT-compliant timestamp block: 00:00 - Title, with chapters spaced according to your video duration, ready to paste into the description.

Video Intro Length Checker

Enter intro length in seconds + total video length. The checker uses YouTube retention curve research (2026 data) to verdict your intro: optimal / borderline / too long. Includes rewrite guidance.

Instagram Bio Character Counter

Type or paste your Instagram bio. Live counter shows: characters used vs 150 limit, line break count, emoji weight (some count as 2 chars), and offers 10 bio templates organized by niche (creator, business, podcaster, course, agency).

Course Lesson Chapter Generator

Enter course topic + total duration + audience level (beginner/intermediate/advanced). The generator outputs a structured module outline: 4-7 modules, each with 3-5 chapters, learning objectives per chapter, and duration estimates.

YouTube End Screen Planner

Enter video duration + end screen goal (subscribe / playlist / external link). The planner outputs a 20-second end screen template: element placement diagram, exact timing for each card, and what to say during the outro.

VOD to Shorts Clip Planner

Enter stream length (hours) + stream format (just-chatting / gaming / IRL / coaching / interview). The planner outputs a structured 12-clip extraction plan: which timestamps to scan, what clip types each format yields, and which platforms each clip belongs on.

Voiceover Script Formatter

Enter topic + target runtime + reading pace (slow/normal/fast). The formatter outputs a structured narration script with word-count targets per section (intro / setup / payoff / CTA), pacing cues, and pause markers.

UGC Rate Card Generator

Enter your follower count + primary niche + the deliverable type (video, photo carousel, story takeover, etc). The generator outputs a 3-tier rate card (basic / standard / premium) using 2026 UGC industry benchmark data.

Podcast Guest Outreach Template

Enter your podcast name + target guest + the specific angle you want to interview them about. The generator outputs a 4-paragraph cold pitch: subject line, opening signal-reference, value proposition for the guest, and a soft ask.

Course Launch Sequence Planner

Enter your course topic + cart-open date + cart-close date. The planner outputs a 30-day launch sequence: pre-launch teasers, cart-open emails, mid-cart urgency, and close-night reminders.

Faceless YouTube Niche Scorecard

Enter a faceless niche (e.g. "AI tools", "personal finance", "Stoicism"). The scorecard outputs scores 0-100 on: RPM potential, competition saturation, content velocity demand, audience longevity, and 12-month runway.

B2B Podcast ROI Calculator

Enter episodes per year + average audience size + your typical close rate + ACV. The calculator outputs estimated pipeline value per episode, CAC equivalent vs paid acquisition, and payback period including production costs.

TikTok Hook Templates

Browse 24 TikTok-native hook templates organized by 4 pattern families: POV setups, contrarian frames, native-audio nods, "before you swipe" stoppers. Pick a family + your topic → 6 personalized hooks. Distinct from the general script-hook-template-library — these are platform-tuned for TikTok's 3-second cliff.

YouTube Hook Formula Builder

Long-form YouTube hooks have different rules than short-form. Inputs: topic + style (tutorial / talking head / vlog / review). Outputs: a 5-8 second hook + a matched mid-video re-hook (delivered at the 50% mark) to survive the retention cliff.

Video Outline Builder

Enter video topic + target duration. The builder outputs a structured 5-section outline: hook, setup, 3-5 body beats, mid-video re-hook, and CTA. Bullet structure per section, ready to expand into a full script.

YouTube Retention Curve Interpreter

Read your YouTube Studio retention data and enter 5 data points (intro retention, 25% mark, 50%, 75%, end). The interpreter diagnoses the pattern (intro drop-off / mid-video cliff / late-tail decay / healthy) and outputs 3 specific fix recommendations per pattern.

Batch Recording Day Template

Enter content type + weeks of output target. The template outputs a 6-8 hour batch day plan: prep blocks (script review, setup, wardrobe), recording slots with break cadence, lighting/audio reset between segments, and a post-production handoff checklist.

LinkedIn Hook Generator

LinkedIn truncates posts after ~3 lines on mobile (140-220 chars). The generator outputs hooks structured to fit within that window: line 1 grabs attention, line 2 builds tension, line 3 forces the "see more" click.

Viral Post Autopsy Template

Paste a post that overperformed + the metrics it hit. The template outputs a structured autopsy: which of the 7 virality drivers (hook pattern, format match, timing, audience overlap, etc.) most likely caused the spike, and 3 repeatable patterns to apply in future posts.

Niche Narrowing Worksheet

Most creators stay broad and lose against incumbents. The worksheet forces narrowing in 5 steps: pick a broad topic → identify 2-3 axes of specificity (audience / format / outcome / context) → score each combo → land on the specific niche where you can actually win.

Newsletter Growth Runway Calculator

Enter current subscriber count + weekly net-new subscribers + monthly churn rate. The calculator projects months to hit common milestones (10k / 50k / 100k) and surfaces which growth channels need to scale to compress the timeline.

Podcast Trailer Script Generator

Enter show name + niche + target audience + host name + episode cadence. The generator outputs a 30-60 second trailer script with: hook (5-10s), show premise (10-20s), what listeners get (10-20s), frequency promise (5s), and CTA to subscribe.

Got an idea for a tool we should build? Emailhi@clipflow.to.