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PDF-, Bild-, Entwickler-, SEO-, Text-, Studenten- und Business-Tools — alle kostenlos, alle vollständig in Ihrem Browser. Kein Upload, kein Konto, kein Server sieht Ihre Daten.
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
Why convert to WebP?
WebP typically produces smaller files than JPG or PNG at a similar visual quality, which is why most modern websites prefer it for faster page loads.
Will every browser open a WebP file?
All modern browsers (Chrome, Firefox, Edge, Safari 14+) display WebP natively. Very old browsers may not — check where the image will actually be used if that matters for your case.
Does it keep transparency?
Yes — unlike converting to JPG, WebP supports transparency, so a transparent PNG converts without losing it.
What if my browser can't create a WebP file?
A few older browser versions silently fall back to a different format when asked for WebP — this tool detects that and shows a clear error instead of quietly handing you a mislabeled file.
Can I control the quality?
Yes — a slider from 30% to 95%; lower gives a smaller file, higher keeps it closer to the original.
Can I convert more than one image at once?
Not in one run — this tool works on one image at a time. Run it again for additional images.
Does it change the image dimensions?
No — only the format and compression change; width and height stay exactly as they were.
Is my image uploaded anywhere?
No — conversion happens entirely in your browser using the Canvas API; nothing is uploaded.
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.
WebP Converter, in depth
WebP Converter turns common images into WebP for faster pages, with a clear encode step you can verify visually before shipping.
How WebP Converter works here
WebP Converter 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 WebP Converter, the controls that change outcomes most are: source image input and WebP encode/download. Change one control at a time when you are comparing results.
When to use it
Use WebP Converter 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: source image input and WebP encode/download.
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 WebP Converter 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 WebP Converter 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.
Speed up landing pages. Convert hero PNGs to WebP for smaller transfers.
Migrate a static gallery. Batch-minded one-at-a-time converts with visual checks.
Keep a fallback plan. Verify transparency and sharpness before deleting PNG sources.
Options that change the result
Primary controls
The important controls are: source image input and WebP encode/download. Change one at a time when comparing outcomes so you know what improved the result.
Run and verify
After you run WebP Converter, 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 WebP Converter, 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). WebP Converter 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
WebP Converter 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 WebP Converter 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.
WebP Converter 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
- Deleting PNG before visual QA — Check transparency and edges first.
- Assuming universal email support — Some clients still prefer JPG/PNG.
- Ignoring quality settings — Over-aggressive encode looks blocky on gradients.
Getting reliable results from WebP Converter
Most failures with WebP Converter 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.
WebP Converter accelerates the workflow; it does not replace your judgment or professional advice where required.
Related tools
These related tools commonly sit before or after WebP Converter in real workflows.
- Image Compressor — Shrink one or many JPG/PNGs at a quality you choose — multi-file ZIP.
- PNG to JPG — Related browser-local tool on TechDriven Tools.
- Image Resizer — Resize one or many images to exact dimensions — batch as ZIP.
Use WebP Converter 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 WebP Converter.
If you arrived from search looking for WebP Converter, 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 WebP Converter, reproduce with a tiny sample input first. Smaller fixtures debug faster than a 200-page scan or a 2MB JSON blob.
Share feedback with teammates as option recipes (“Quality 72%, bottom-center numbers, Start at 1”) rather than screenshots alone — recipes transfer cleanly.
From our blog: How to Convert Images to WebP