Lossless Rewrite: Shorten text, keep ideas

Shorten text in ChatGPT, Claude and other AI chats. Choose what to keep, then check the rewrite for missing ideas.

Asked AI to shorten a draft, then had to check what it left out? Lossless Rewrite helps you cut words without losing the ideas you chose to keep. Highlight passages in your chat or a reference PDF, ask for a rewrite, then check the reply for missing or changed meaning. Works in ChatGPT, Claude, Gemini, Grok and DeepSeek. Your existing chat does the writing; Lossless adds your selections and checks the result. CHOOSE WHAT STAYS • Keep meaning: preserve an idea, finding or condition while allowing new wording. • Keep wording: preserve a quote, number or sentence exactly. • Remove this: ask the AI to leave selected content out, including paraphrases. CHECK THE REWRITE • Check the finished reply against your selections and writing rules. • Review passages flagged as missing, changed or still present. • Prepare a correction in the same chat. Review it before sending. • Toggle source and reply highlights to compare matching wording. Highlights alone do not verify meaning. KEEP YOUR SOURCES AND PREFERENCES CLOSE • Open a local PDF beside your chat and select passages from it. • Save writing rules such as “Use British English” or “Keep uncertainty explicit.” • Optionally remember explicit writing preferences from messages you send, with Undo and an off switch. • Move or hide the small floating control. Open checks, selections, PDFs and rules when you need them. USE IT FOR • Tightening a paper's discussion while preserving findings and caveats. • Condensing related work while retaining selected claims and attribution. • Simplifying a policy while keeping its conditions. • Changing an email's tone while keeping its message. GET STARTED 1. Open a supported AI chat and select a passage. Choose Keep meaning, Keep wording or Remove this. 2. Write your request, such as “Shorten this to 150 words.” 3. Press Ctrl+Shift+Enter (Command+Shift+Enter on Mac) to send it with your selections. 4. When the reply is ready, choose Check reply in the Lossless menu. FREE TO START Exact-wording checks run on your device without an account. Sign in with Google for 25 meaning-check credits each month, with no API key required. Larger checks show their credit cost before running. Your AI chat provider's account and usage limits still apply. Plus and Pro are not yet available. YOUR TEXT AND YOUR CONTROL PDF files stay on your device. Marked passages are included in requests you send to your AI chat. Meaning checks send the selected passages, writing rules and reply to our checking service, powered by Jev. Marking content “Remove this” is an editing instruction, not a way to hide it from the provider. AI checks can be wrong; review important results. Lossless Rewrite is an independent extension, not affiliated with the supported AI chat providers.