--- title: "Run several tools in one go with tool chains" description: "A tool chain runs several tools back to back on one file, handing each result to the next. Run a ready-made chain or build your own." canonical: "https://www.razi.pro/help/tool-chains" updated: "2026-09-15" tags: ["chain tools together", "tool chains", "scanned pdf to summary", "combine online tools", "photos to pdf", "pdf to images zip", "ocr then summarize", "build a custom tool pipeline"] source: "razi.pro" --- # Run several tools in one go with tool chains A tool chain runs several tools back to back on one file, handing each result to the next. Run a ready-made chain or build your own. **Browse tool chains:** https://www.razi.pro/tool-chains ## Steps 1. Open Tool Chains and pick a ready-made chain. 2. Click the chain's card to open it in the runner. 3. Choose your file, paste your text, or paste a link, depending on what the chain asks for. 4. Optionally, change the settings shown on each step. 5. Click Run chain and watch each step finish. 6. In the Result box, click Copy or Download. ## What a tool chain is Most jobs need more than one tool. A chain runs several of the site's tools one after another, and each tool hands its output straight to the next. You give it one file, or some text, or a link, and you get one result at the end. For example, the **Scanned PDF → Summary** chain turns the PDF into page images, reads the text out of those images, and then summarises it. That is three tools, and you only upload once. There is no signup and no account needed. ## Running a ready-made chain Open [Tool Chains](https://www.razi.pro/tool-chains). Under **Ready-made chains** you see cards such as: - **PDF → Summary**: summarises a PDF that already has selectable text. - **Shrink a PDF**: rebuilds a heavy PDF from compressed page images. - **Several PDFs → one PDF**: joins PDFs in the order you pick them. - **Photos → one PDF**: turns a batch of images into one document, one page each. - **Article → Summary**: paste a link and get the gist. - **Photo → Clean cutout**: removes the background, then shrinks the result. Each card shows the tools in the chain and how many steps it has. Click a card to open it in the runner, give it your file, text or link, and click **Run chain**. Each step shows a tick when it finishes. If you want to try a different chain, pick one under **Or try another chain**, below the runner. ## Building your own chain Under **Or try another chain**, click **Build Custom Chain**. It starts with a single step: uploading a PDF. - Click **Change source** on the first step to start from something else, such as an image, several images, pasted text or a link. - Under **Add Next Step**, you only see tools that can take the previous step's output. Click one to add it. - Click the bin icon on a step to remove it. Any later steps that no longer fit are removed too. - A chain can have at most 8 steps. When you change a ready-made chain, it becomes a custom chain. **Share recipe** copies a link to the chain and its settings, so someone else can open the same chain. It does not include your file. ## Size limits The files you start with can add up to 25 MB in total. Some steps accept less than that: | Step | Largest input it accepts | | --- | --- | | Read text from image | 8 MB | | Remove the background | 8 MB | | Repeat into a grid | 12 MB | | Compress the image | 20 MB | | Paste text | 2 MB of text | | Summarize | 1 MB of text | | Rewrite in another tone | 512 KB of text | Some steps only handle a certain number of files at once. For example, **Split into page images** does at most 10 pages, and **Read text from image** reads up to 5 images in one run. If a step gets more than it can take, it shows a message telling you the limit. ## What happens to your file, and where results go The file is passed from step to step inside your browser. Steps that need a server, such as reading text from images, compressing images, fetching an article, summarising or rewriting, send only what they need. Nothing is stored. When the chain finishes, a **Result** box appears: - Text results can be copied with **Copy** or saved as a text file with **Download**. - Image results are shown as a preview. **Download** saves one file. If a chain produces several images, **Download** saves only the first, so end the chain with **Zip them up** to get them all in one download. Nothing is saved to your account. If you leave or reload the page, the result is gone, so download it first. If a step fails, the last good result is still shown, so you can still download that. ## Frequently asked questions ### Do I need an account to use tool chains? No. Every chain runs straight away with no signup and no account. ### How big can my file be? The files you start with can add up to 25 MB. Some steps take less, for example reading text from an image and removing a background each accept up to 8 MB. ### Are my files saved anywhere? No. The file moves between steps inside your browser, and only the steps that need a server send anything. Nothing is stored, so download your result before you leave the page. ### Why did Download only give me one image? When a chain ends with several images, Download saves the first one. Add the Zip them up step at the end of the chain to download them all as one file. ### Can I share a chain I built? Yes. Click Share recipe to copy a link to your chain and its settings. The link does not include your file. ### How many steps can a chain have? Up to 8 steps, including the first step where you give it your file, text or link.