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Popular tools
The highest-demand tools with full options — browse by category below for the rest.
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. Honest limits worth knowing: Compress PDF flattens each page to a re-encoded image (great for scans, not ideal if you need selectable text after); HEIC conversion depends on your browser (Safari usually works; Chrome often cannot decode HEIC without a library we don't ship); Fill PDF Form is best-effort for simple AcroForm fields, not a full Adobe Forms replacement; and Word/Excel/PowerPoint ⇄ PDF genuinely needs a server-side engine, so it isn't included — 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
ATS Resume Checker highlights keyword coverage against a job description so you revise before submitting.
How ATS Resume Checker works here
ATS Resume Checker runs locally in your browser on TechDriven Tools. Inputs stay on your device — nothing is uploaded for this step.
Read every label before running. For ATS Resume Checker, the controls that change outcomes most are: resume text plus job description keyword overlap. Change one control at a time when you are comparing results.
When to use it
Use ATS Resume Checker when the job matches what the tool is named for — not as a generic substitute for unrelated PDF or data tasks.
Prefer this browser version when the input is sensitive and you want processing to stay on-device with clear option names like: resume text plus job description keyword overlap.
If the next step differs (for example you finished and now need a sibling utility), jump to a related tool instead of forcing one screen to do everything.
Teams standardize on ATS Resume Checker when the alternative is emailing files to a consumer upload site. Document the preferred option defaults (for example the usual quality, corner, or rate) so everyone reproduces the same result.
If ATS Resume Checker is only one step in a pipeline, write the order down: what happens before, what happens after, and which related tool owns each step. That prevents double-processing and accidental quality loss.
On mobile, prefer moderate file sizes and simpler option combinations. Local processing is powerful, but phones have less memory than desktops for huge scans or megapixel images.
Before you apply. Paste resume and job description to see missing keywords.
Iterate wording. Align skills section to the posting without inventing experience.
Pair with Resume Builder. Fix gaps, then export a clean PDF.
Options that change the result
Primary controls
The important controls are: resume text plus job description keyword overlap. Change one at a time when comparing outcomes so you know what improved the result.
Run and verify
After you run ATS Resume Checker, open or inspect the output on the device where you will share it. Keep originals until that check passes.
Boundaries
This page does not replace desktop suites for heavy Office conversion or certified legal e-sign. It covers the focused job described above.
Practical defaults
Start with conservative defaults on ATS Resume Checker, run once, then adjust. Extreme settings (lowest quality, highest tip, densest QR payload) are for known constraints — not first tries.
Inputs that surprise people
People often misread units or page indexes. Align with the on-screen labels and the total page count or unit selectors before blaming the engine.
Outputs and naming
Rename downloads immediately (date + client + purpose). ATS Resume Checker may use a generic filename; clear names prevent sending yesterday’s draft.
Accessibility and sharing
After visual tools (watermark/sign/page numbers), skim a page with fresh eyes for contrast and coverage. After data tools, copy results into the system of record your team actually uses.
Privacy
ATS Resume Checker is designed to run in your browser so your files and text are not uploaded for the core transformation.
Still handle downloads carefully: a private process can still leave sensitive files in your Downloads folder.
Optional accounts on TechDriven Tools, when used, are about lightweight usage metadata — not storing the contents of your ATS Resume Checker inputs.
If policy requires a vendor DPIA for any online tool, note that local browser processing reduces data transfer risk, but downloaded artifacts still need handling under your retention rules.
ATS Resume Checker is built to process locally in your browser so sensitive PDFs, images, or text do not need to be uploaded to an unknown server just to finish this job.
Common mistakes
- Keyword stuffing nonsense — Coverage helps; unreadable resumes do not.
- Different job description versions — Paste the real posting you will apply to.
- Assuming ATS is identical everywhere — Systems vary; this is a practical guide, not a guarantee.
Getting reliable results from ATS Resume Checker
Most failures with ATS Resume Checker are input/setting issues rather than mysterious bugs: wrong units, wrong page lists, wrong language, or expecting one tool to do a sibling’s job. Re-read the option names, fix the input, and re-run — local tools make iteration cheap.
ATS Resume Checker accelerates the workflow; it does not replace your judgment or professional advice where required.
Related tools
These related tools commonly sit before or after ATS Resume Checker in real workflows.
- Resume Builder — Fill in a simple form and generate a clean, downloadable PDF resume.
- Word Counter — Count words, characters, sentences and paragraphs as you type.
- Meta Tag Generator — Build title, description, Open Graph and Twitter Card tags for a page.
Use ATS Resume Checker when you need this specific job done privately and quickly. Respect what it is not (see mistakes), verify outputs, and chain related tools only when the next step truly differs.
Start from ATS Resume Checker.
If you arrived from search looking for ATS Resume Checker, bookmark the tool page itself after this guide — the article exists to teach options and pitfalls, not to replace the working UI.
When something looks wrong in ATS Resume Checker, reproduce with a tiny sample input first. Smaller fixtures debug faster than a 200-page scan or a 2MB JSON blob.
From our blog: How to Beat an ATS: A Practical Resume Keyword Guide