Readability Optimizer
Readability guardrail for listing copy: score 0–100, a traffic light (green/yellow/red) and 3 recommendations — plus heuristic rewrite suggestions (no LLM).
Note: results are not made indexable via URL parameters. Canonical: https://tools.snapsoft.de/en/tools/readability
Who is this for?
- Content/listing teams that want a quick mobile scannability check
- Sellers/brands using copy guardrails (sentence length/bullets) as a review checklist
- Agencies rolling out consistent copy standards (short/medium/long)
Readability optimizer: improve sentence length & bullets fast
Long sentences and bullets reduce scannability — especially on mobile. This quick check highlights where your text gets too long (sentences/paragraphs/bullets) and whether it fits your goal (short/medium/long).
You get hints, heuristic rewrite suggestions and a simple traffic light. Everything runs locally in your browser — no upload, no storage, no LLM call.
Calculator
Max 6 inputs, clear outputs. Everything runs locally in your browser.
Inputs
Advanced options
Result
How it works
We segment text into sentences (line breaks count as hard boundaries) and count words per sentence. Everything above the max is flagged.
We detect bullets via common prefixes (• / - / 1.) and check character length per bullet against the maximum.
Your goal (short/medium/long) derives a simple word budget (sentence budget × max sentence length). Score/signal are derived from the amount/severity of violations: red for hard violations (sentences/bullets/budget), yellow for softer warnings (paragraphs/style).
Quick conclusion
- Keep sentences short (e.g. ≤ 18 words) — especially in bullets.
- Bullets: benefit first, then proof/spec; move long details into paragraphs.
- Align length with your goal (short/medium/long) and keep it consistent across variants.
Sources & notes
Disclaimer: assumptions, fees and policies can vary and change. Always verify critical values in official sources (marketplace, supplier, payment provider).
FAQ
Do you store my text?
No. Everything runs locally in your browser.
Do you rewrite the text automatically?
No. There is no LLM call. We only provide heuristic hints/suggestions to help you rewrite faster.
How do you detect sentences and bullets?
Sentences are segmented heuristically (incl. Intl.Segmenter when available). Bullets are detected via typical prefixes. Use it as a guardrail, not as a grammar checker.
What thresholds should I use?
Start with the defaults (e.g. 18 words per sentence, 120 chars per bullet) and adapt them to your goal (short/medium/long). Consistency across variants/ASINs matters most.
Is the score a ranking signal?
No. It’s a heuristic guardrail for clarity/scannability (especially mobile). Use it as a QA checklist — not an SEO dogma.
Turn it into a repricing rule in SnapTrade
If you need copy standards (readability, structure, templates) as repeatable workflows (QA routines, reviews, monitoring): SnapTrade can model and automate those processes.