Every file you touch here stays on your machine.
PDF, image, developer, SEO, text, student and business tools — all free, all entirely in your browser. No upload, no account, no server ever sees your data.
The toolset
Focused tools covering the everyday PDF work — pick one to get started, no account needed.
How this actually works
Each tool runs entirely with JavaScript already loaded in this page — PDF tools via pdf-lib and pdf.js, image tools via the browser's native Canvas API, and everything else with plain JavaScript. Your files or input are read into browser memory, processed, and handed back as a download or copyable result. This page itself is served by a small Laravel route; Laravel never sees your files either. The only backend in use is Supabase, and only for two optional things: signing in with a magic link, and — only if you're signed in — a log of which tool you ran and when. Two things have real limits worth knowing up front: Compress PDF flattens each page to a re-encoded image (great for scan-heavy PDFs, not ideal if you need selectable text after), and Word/Excel/PowerPoint ⇄ PDF conversion genuinely requires a server-side rendering engine, so it isn't included here — this build only ships tools that can honestly run client-side.
Questions people actually ask
How does the keyword match work?
Both texts are tokenized and compared — significant words and phrases that appear in the job description but not in your resume are flagged as missing, and a match percentage is shown based on overlap.
Does it check formatting or ATS-parseability, not just keywords?
This tool focuses specifically on keyword overlap, which is the single biggest factor in most real ATS ranking systems. It doesn't check document formatting — for that, keep your resume as clean, standard text (avoid tables, columns, and images an ATS parser can choke on).
Should I stuff every missing keyword into my resume?
No — add keywords only where they're honestly true of your experience. Keyword-stuffing irrelevant terms can get flagged by more sophisticated ATS systems and reads badly to the human who reviews it after.
Does it work for any job description?
Yes — paste any job posting text; there's no fixed list of roles or industries it's limited to.
Is this the same as a real company's ATS system?
No — real ATS software varies widely and its exact scoring is proprietary. This gives you a genuine, useful signal (keyword overlap) using the same underlying idea most ATS systems rely on, not a guaranteed match to any specific vendor's system.
Can I copy or download the results?
Yes — the missing-keyword list and match percentage can be copied or downloaded as a text summary.
Does it update live as I type?
Yes — paste or edit either text and the comparison recalculates.
Is my resume or the job description sent anywhere?
No — the comparison happens entirely in your browser; neither text is transmitted.
Is this really free, and is there a file size limit?
Yes — no account, no paywall. Since processing happens in your browser's memory rather than uploading anywhere, the practical limit is your device's available RAM, not a server quota. Very large files (500+ pages) may run slower, especially for Compress and PDF→JPG.
Does anything about my file get sent anywhere?
No. Every tool runs with pdf-lib/pdf.js loaded in this page; your file is read into browser memory and never leaves it. The only network call this app makes for your account is Supabase auth — and that only stores which tool you ran and when, never file content.
Why isn't Word/Excel/PowerPoint → PDF included?
Converting Office formats accurately needs a real rendering engine (what Word or LibreOffice use internally) — no browser library does this reliably. Rather than ship a broken version, it's left out.
Does TechDriven Tools have OCR (text recognition)?
Yes — OCR PDF recognizes text in scanned or photographed pages using Tesseract.js, running entirely on your device, and gives you a searchable PDF or a plain text file. Nothing is uploaded for this either.
Can I use this without an internet connection?
Once the page and its libraries have loaded once, yes — the tools themselves need no network access. Signing in and viewing history do require a connection, since those talk to Supabase.
What happens to the "history" if I sign in?
Only a row per tool run — the tool's name and a timestamp. No filename, no file content, ever. You can see the full list any time via the History button.
Are the non-PDF utilities (password generator, JSON formatter, etc.) private too?
Yes — same rule as the PDF tools. Word Counter, Case Converter, Password Generator, UUID Generator, Base64, Hash Generator, JSON Formatter and JWT Decoder all run with plain JavaScript already loaded in this page; nothing you type or paste is sent anywhere.
ATS Resume Checker, in depth
Compare your resume against a job description and see which keywords are missing — a real, honest signal, not a fake score.
Features
Match Percentage
A real, computed overlap score between your resume and the posting.
Missing Keywords List
See exactly which terms from the job description aren't in your resume.
Live Analysis
Updates as you edit either text.
Private
Neither text is ever transmitted anywhere.
Why use ATS Resume Checker
- Check keyword alignment before submitting an application.
- Spot a real skills gap reflected honestly in your resume's wording.
- Tailor a resume for a specific job posting rather than sending one generic version everywhere.
- Understand why ATS keyword matching matters at all.
How it works
Both texts are tokenized (with common stop words filtered out) and compared — terms appearing in the job description but not the resume are flagged as missing, and a match percentage is computed from the overlap, all done with plain text analysis in your browser.
What this isn't
This isn't the same as any specific company's real ATS software, which varies widely and uses proprietary scoring. It gives a genuine, useful signal using the same underlying idea most ATS systems rely on — keyword overlap — without claiming to replicate any particular vendor's exact algorithm.
From our blog: How to Beat an ATS: A Practical Resume Keyword Guide