Why they exist
The right tool for one small, sharp problem.
Everyone hits these little walls: almost-valid JSON a formatter rejects, a screenshot of a table you have to retype, a medical bill you can't read, a stack trace that buries the actual cause. Acute Tools fixes one of them at a time, with zero friction. No account, no paywall, no "sign up to continue."
No login, ever
No signup, no account, no email wall. Open a tool and use it.
Private by default
Half the tools never leave your browser. The rest use only what you paste to produce the answer, and nothing is stored or logged.
One job each
Every tool is a single screen with one obvious action. The output looks clean enough to screenshot.
Runs in your browser
10 tools · nothing leaves the pageFully client-side. These work even with the network off, and your data never touches a server.
TextScrub
BrowserFix text mangled by copy-paste: smart quotes, invisible zero-width characters, and tracking junk in URLs.
OpenFixJSON
BrowserPaste almost-JSON (trailing commas, single quotes, a pasted JS object) and get valid, prettified JSON plus a list of what was repaired.
OpenFixCSV
BrowserDrop a broken CSV with ragged rows, unescaped quotes, or mystery delimiters, and get a clean RFC 4180 file plus a report.
OpenConfigDiff
BrowserA diff that understands JSON & YAML structure, so only real changes surface, by key path, regardless of formatting or key order.
OpenPromptMeter
BrowserToken count and per-model cost across GPT, Claude & Gemini, side by side, before you send a prompt.
OpenStripEXIF
BrowserSee the GPS location, device, and timestamps hiding in a photo, then download a clean copy with all of it removed.
OpenRedactor
BrowserMask emails, API keys, tokens, SSNs & card numbers out of a log before you paste it into a ticket or chat.
OpenUnmojibake
BrowserTurn “é’” back into real text. Reverses the character-encoding mismatches that mangle pasted content.
OpenSubShift
BrowserConvert subtitles between SRT & VTT and re-sync ones that are off, with a constant shift or a two-point linear sync.
OpenSizeUp
BrowserDrop one image and get every social size (Instagram, X, LinkedIn, Open Graph, YouTube, favicon) cropped and bundled as a zip.
OpenAI-powered
9 tools · rate-limited, nothing storedThese call a thin proxy that runs the model server-side. Your input is used only to produce the answer, never logged or stored, and a per-visitor daily limit keeps them free.
SnapTable
AI · visionDrop a screenshot of a table, get a clean editable grid, and copy it as CSV, Markdown, or JSON.
OpenDecodeCmd
AIPaste any cryptic command (ffmpeg, jq, git, awk, cron) and get a plain-English, flag-by-flag breakdown, with anything destructive flagged.
OpenWhatBroke
AIPaste a stack trace, get the actual root cause, the one frame that matters, and a likely fix.
OpenPlainClause
AIPaste a clause from a contract, lease, or ToS, get plain English plus flags for the sketchy parts. (Not legal advice.)
OpenBillDecode
AI · visionDecode a medical bill or insurance EOB line by line: what you owe, what insurance covered, and what's worth questioning. (Not medical or insurance advice.)
OpenQueryLens
AIPaste a SQL query, get a plain-English explanation and a list of what'll make it slow, ranked low / medium / high.
OpenCodeSnap
AI · visionTurn a screenshot or photo of code into clean, indented text you can run. Language auto-detected.
OpenMockJSON
AIDescribe the data you need, like “20 orders with a customer, total & status,” and get realistic sample JSON.
OpenPrivacyGrade
AIPaste a privacy policy or a URL, get an A to F grade: what they collect, who they share it with, and the red flags.
OpenResolved server-side
1 tool · no AI, nothing storedA tiny server function does the network work so your browser never has to open the link itself.
How it works
Built the way we build everything.
Ten tools run entirely in your browser, so no server ever sees your data. Nine call a thin proxy that holds the API key, never logs what you send, and rate-limits per visitor so they stay free. One resolves links on the server behind a strict guard that refuses to touch internal addresses. No accounts, no tracking, no dark patterns. Just small, sharp tools, backed by a team that answers when you email.
Get in touch
Found a bug, or want one built?
These are free tools we run ourselves. If something's off or you've got an idea, tell us.