Hundreds of tools. Zero uploads. https://duckytools.com/ 2026-08-03T00:00:00Z DuckyTools https://duckytools.com/changelog/#2026-08-03-0 2026-08-03T00:00:00Z

Changed: DuckyTools now lives at duckytools.com. Every canonical URL, sitemap entry, Open Graph tag and machine-readable file follows from a single line of configuration, so the move was that line — and a test now checks that the domain file and the canonicals can never disagree. Fixed: The build was not reproducible. Two files carried a clock reading rather than a date, so every deploy rewrote them whether or not anything had changed. Both now derive from the build date, and a check builds the

https://duckytools.com/guides/scanned-pdf-vs-text-pdf/ 2026-08-02T00:00:00Z

Two files that look identical can behave completely differently. How to tell which you have in three seconds, and what each one can and cannot do.

https://duckytools.com/guides/what-drives-an-llm-api-bill/ 2026-08-02T00:00:00Z

Tokens are not words, output costs several times more than input, and caching changes the arithmetic entirely. The three things that decide what you pay.

https://duckytools.com/guides/what-happens-when-you-upload-a-file/ 2026-08-02T00:00:00Z

A step-by-step account of where your document goes on a typical file-conversion site, how long it stays, who can reach it, and how to check before you upload anything.

https://duckytools.com/guides/compress-an-image-without-wrecking-it/ 2026-08-02T00:00:00Z

What JPEG quality settings actually do, why resizing beats compressing, and the order of operations that gets a photo under a size limit while still looking right.

https://duckytools.com/guides/make-ai-writing-sound-human/ 2026-08-02T00:00:00Z

The specific tells that make generated text obvious — em dashes, a fixed vocabulary, sentences that are all the same length — and what to do about each one.

https://duckytools.com/guides/image-sizes-that-actually-matter/ 2026-08-02T00:00:00Z

The pixel dimensions worth knowing for the web, social platforms and print — plus why "300 DPI" means nothing without a physical size.

https://duckytools.com/guides/browser-tools-vs-upload-tools/ 2026-08-02T00:00:00Z

Most online tools send your file to a server. Some do the work on your own device. The difference decides who can read your document — and it is visible from the outside if you know what to look for.

https://duckytools.com/guides/what-your-photos-reveal/ 2026-08-02T00:00:00Z

Every photo from a phone carries hidden EXIF metadata — often including the exact GPS coordinates and timestamp. Here is what is in there, who can read it, and how to remove it.

https://duckytools.com/guides/image-formats-explained/ 2026-08-02T00:00:00Z

A practical comparison of the five image formats that matter on the web — what each is good at, what it costs in file size, and which one to pick for photos, logos, screenshots and icons.

https://duckytools.com/guides/shrink-a-pdf-for-email/ 2026-08-02T00:00:00Z

Attachment limits, what actually makes a PDF large, and which compression method to use for scans, text documents and image-heavy reports.

https://duckytools.com/changelog/#2026-08-02-4 2026-08-02T00:00:00Z

Added: @duckytools/sdk — the tool contract published as a zero-dependency package. The site's own build validates its catalog through it, so the documented standard and the enforced one cannot drift. Added: Tool Builder: write a tool definition in the browser, watch it mount, download it as a single self-contained HTML file. Added: What Can I Do With This File? — identifies a file from its opening bytes rather than its name, then routes it to the tools that accept it. Added: cURL to fetch, Unico

https://duckytools.com/changelog/#2026-08-02-3 2026-08-02T00:00:00Z

Added: Thirteen tools for working with model output: em dash remover, AI text cleaner, writing-tells analyzer, token counter, cost calculator, prompt tooling and a chat transcript formatter. Added: CSS clamp generator, markdown table generator, number formatter, duplicate word finder, sentence splitter, text truncator and regex escape. Changed: The site is now written in American English. No URL changed. Note: Nothing in the AI category claims to detect AI authorship, because nothing can. The an

https://duckytools.com/changelog/#2026-08-02-2 2026-08-02T00:00:00Z

Added: AI Background Remover — a real ISNet segmentation network running through ONNX Runtime in your browser, with zero requests to any other origin. Every comparable service uploads your photo; this downloads the model instead. Added: Tool chaining. Every result now offers "Send to another tool", carrying the file in memory with no download between steps. Added: Operating-system integration: DuckyTools appears in "Open with" for PDFs, images, text and audio once installed, accepts the Android

https://duckytools.com/changelog/#2026-08-02-1 2026-08-02T00:00:00Z

Fixed: The Tool Builder parsed tool definitions on the main page rather than inside its sandbox. Definitions travel in the URL hash, so a share link could have run a stranger's code with access to this site's storage — the exact thing the sandbox was there to prevent. Parsing, previewing and exporting now all happen inside a frame with its own opaque origin, and the page only ever handles the definition as text. Added: A Content-Security-Policy that browsers actually enforce. It was previously w

https://duckytools.com/changelog/#2026-08-01-6 2026-08-01T00:00:00Z

Added: The catalog, across PDF, image, conversion, text, developer, calculator, unit, color, web and media categories. Added: Three themes, a command palette, and paste-or-drop anywhere. Note: No analytics, no accounts, no upload endpoint. None of those has been added since, and none is planned.

https://duckytools.com/changelog/#2026-08-01-5 2026-08-01T00:00:00Z

Added: Optical character recognition with Tesseract self-hosted — 11MB of WebAssembly served from this site, so English OCR makes no external request at all. Added: Long-form guides with reference tables of real figures. Added: Offline support through a service worker, and installation as a progressive web app. Fixed: The service worker never installed on the live site — it precached root-absolute paths that 404 under a project subpath, so installation failed silently and offline support did not