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
What is a SIP?
A Systematic Investment Plan — investing a fixed amount regularly (usually monthly) rather than a lump sum, commonly used for mutual fund investing.
What formula does this use?
The standard SIP future-value formula: FV = P × [((1+r)ⁿ − 1) / r] × (1+r), where P is the monthly investment, r is the monthly rate of return, and n is the number of months.
Does it show how much I invested vs. how much I gained?
Yes — total invested (monthly amount × number of months), the final maturity value, and the difference (wealth gained) are all shown separately.
Is the expected return rate guaranteed?
No — it's an input you provide based on your own expectation or a fund's historical average; actual market-linked returns vary and aren't guaranteed by this or any calculator.
Does it assume the same investment amount every month?
Yes — this calculates a fixed, unchanging monthly SIP amount. A step-up SIP (increasing the amount periodically) would need a different calculation this doesn't cover.
Can I use this for a weekly or quarterly SIP instead of monthly?
This is built specifically for monthly SIPs, the most common frequency — a different interval would need adjusting the rate and period math accordingly, which this tool doesn't do automatically.
Is this official financial advice?
No — it's a convenience calculator for estimates, not professional investment advice. Actual returns depend on market performance.
Is my investment amount sent anywhere?
No — the calculation happens entirely in your browser as you type; nothing 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.