Text Simplifier
Commercial use OK
380+ models
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Model:
+ GPT-5, Claude, Gemini
Original
Simplified
Advanced options
Result
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Simplify complex text with free AI. Make content easier to understand.
How to Use Text Simplifier
1
Enter your input
Type text, upload a file, or describe what you want. No account needed.
2
Click generate
Our AI processes your request in seconds using the best open-source models.
3
Download & share
Download, copy, or share your result. Free for personal and commercial use.
Use this tool via API
Automate this tool from your own code. OpenAI-compatible REST endpoint, Bearer-token auth, no extra SDK required. Token costs match the web interface.
curl -X POST https://api.free.ai/v1/chat/ \
-H "Authorization: Bearer sk-free-..." \
-H "Content-Type: application/json" \
-d '{"model": "qwen7b", "messages": [{"role": "user", "content": "Summarize this: ..."}]}'Related Free AI Tools
Text Simplifier — FAQ
Free.ai Text Simplifier rewrites complex, technical, or jargon-heavy text to a target reading level. 4 levels (5th grade / 8th grade general public / high school / college kept-technical) and a Preserve picker (default gloss / keep technical terms / replace all jargon / ESL-tuned). Preserves every fact, number, and claim — only language changes. Diff view highlights every rewrite.
Hemingway Editor ($19.99 one-time) highlights complex sentences but doesn't rewrite. Rewordify.com is free but uses a 2010-era synonym swap (replaces "arduous" with "difficult" but keeps sentence structure). Grammarly Premium ($12/mo) flags clarity issues but focuses on grammar. Free.ai actively rewrites to a named reading level, runs on self-hosted GPUs, and ships 4 distinct levels with explicit vocabulary rules (5th grade: top-2000 common words only; 8th grade: under 18 words/sentence; etc.).
Three failure modes: (1) Legal or clinical documents — use "Keep technical terms" preserve mode; never let the model replace legally-defined or clinically-precise terminology with plain-language approximations. (2) Poetry and literary prose — simplifying flattens meaning when the original uses rhythm/sound deliberately. (3) Translations — if the source is already translated into English, simplifying may introduce drift; start from the original language.
5th grade targets young English speakers — short sentences, simple words, age-appropriate examples. ESL targets non-native adult speakers — still short sentences, but adult-topic vocabulary, avoids idioms and phrasal verbs where single-word equivalents exist, avoids cultural references without context. ESL is better for international business / government communications; 5th grade is better for children's education.
Pick Preserve = "Keep technical terms" — the model keeps clinical / legal vocabulary verbatim and adds a plain-language gloss on first use ("hypertension (high blood pressure)"). Default mode replaces most jargon with glossed equivalents. Never let "Replace all jargon" run on legally-binding or clinically-critical documents.
Same output pipeline, different UX. Simplifier is a single-purpose tool with 4 explicit reading levels. Rewriter's Simplify is one of six modes in a broader tool. Use Simplifier when reading level is your only concern; use Rewriter when you also want structural changes (Shorten, Expand) alongside simplification.
Nine explicit picks + auto-detect: English, Spanish, French, German, Portuguese, Italian, Chinese, Japanese, Arabic. Reading-level targets calibrated for English; for other languages we approximate (short sentences, common vocabulary, active voice) but can't hit specific Flesch-Kincaid grades. For the 89 other Free.ai languages, simplification works but without graded level guarantees.
Yes — system prompt hard-requires preserving every fact, number, name, date, and claim. Only language changes. Verify critical numbers in output against source for high-stakes work.
Up to 5,000 words per run. For PDFs, extract to text first (or use /pdf/summarizer/ for summarization + simplification chain). For book-length work, split by chapter.
Text is sent to Free.ai's self-hosted GPUs, processed, and discarded. We do not train on user inputs. We log only timestamp + token cost for billing — never the source text. Generation history (signed-in users) stores a 200-char preview.
No — first simplification runs free, no email, no credit card. Sign up for 10,000 free signup tokens + generation history + access across all 400+ Free.ai tools.
Yes. POST to /v1/chat/ with the simplifier system prompt (bearer auth, monthly limits per plan). Useful for accessibility pipelines, plain-language government content, or ESL material generation. Full snippets at /api/.
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