Anvil Tools
Private browser tools for everyday files, text, and testing.
Make everyday work a little easier. Convert files, create something new, and bring order to your text with practical tools that open right in your browser.
20 useful tools / No installation needed
A shortcut for your everyday.
Open a tool, complete the task, and check the result before you share it.
No matching tools. Try a different name or category.
Temporary Email Generator
Receive non-sensitive test messages for services you own, manage, or are allowed to test.
External email serviceOpen tool →Background Remover
Remove the background from a photo automatically, processed locally in your browser.
Runs in your browserOpen tool →PDF Merge
Combine multiple PDF files into a single document in the order you choose.
Runs in your browserOpen tool →Image to PDF Converter
Turn JPG, PNG, or WebP images into ordered pages in one downloadable PDF.
Runs in your browserOpen tool →QR Code Generator
Turn any link or short message into a scannable QR code you can download as an image.
Runs in your browserOpen tool →Password Generator
Create a strong, random password with adjustable length and character types.
Runs in your browserOpen tool →Word & Character Counter
Count words, characters, sentences, and estimated reading time as you type.
Runs in your browserOpen tool →JSON Formatter & Validator
Pretty-print, minify, and validate JSON directly in your browser.
Runs in your browserOpen tool →Base64 Encoder & Decoder
Convert text to Base64 and back, entirely in your browser.
Runs in your browserOpen tool →User-Agent String Reference
Reference strings for parser and request-header tests in applications you own or are authorized to test.
Runs in your browserOpen tool →Color Palette Generator
Generate a five-color palette for design work, with the option to lock colors you like.
Runs in your browserOpen tool →Unit Converter
Convert between common length, weight, and temperature units instantly.
Runs in your browserOpen tool →URL Encoder & Decoder
Encode text for a URL or decode percent-encoded values safely.
Runs in your browserOpen tool →JWT Decoder
Inspect a JWT header and payload without uploading the token.
Runs in your browserOpen tool →Unix Timestamp Converter
Convert Unix seconds or milliseconds to readable local and UTC dates.
Runs in your browserOpen tool →Hash Generator
Generate SHA-256, SHA-384, or SHA-512 hashes from UTF-8 text.
Runs in your browserOpen tool →CSV to JSON Converter
Convert quoted CSV data into JSON arrays or objects locally.
Runs in your browserOpen tool →Text Case Converter
Convert text to upper, lower, title, sentence, camel, snake, and kebab case.
Runs in your browserOpen tool →Text Difference Checker
Compare two texts line by line and highlight additions and removals.
Runs in your browserOpen tool →UUID Generator
Generate cryptographically random RFC 4122 version 4 UUIDs.
Runs in your browserOpen tool →Why these tools work this way
Most of the tools on this site run entirely in your browser using JavaScript, which means your files and text are processed on your own device rather than uploaded to a server. The temporary email tool is the one exception: it needs a real inbox somewhere to receive mail, so it uses a public email service built for exactly this purpose. Each tool's page explains exactly how it works and what happens to your data.
A little guidance goes a long way
Read guides & experiments on getting the most out of these tools →
From a photograph to a checked document
Suppose a product illustration needs to join a short PDF submission. Remove its background, inspect the transparent result, convert the prepared image into a PDF page, and merge that page with the existing documents. Keep the original files until the final PDF has been opened and checked.
- Remove the background and inspect the result on both light and dark surfaces.
- Convert the prepared image. Each image becomes a page; this does not add searchable OCR text.
- Arrange and merge the PDF files. Open the download to check page order, dimensions, and readability.
Use the image guide and PDF guide for the detailed checks.
What stays local and what needs a service
Text transformations, PDF conversion, QR generation, and image processing operate on your device. Pages, libraries, fonts, and the background model still need to load over a network. Temporary email uses an external mail provider through our backend; contact forms send information to our support systems. Read the privacy policy for those differences.
No public account is required for the tools. Device memory, input size, and external service availability can affect a workflow. Report a reproducible problem through Contact using sample data instead of private files.
Choose a guide by task
- Images and documents: inspect a cutout, then assemble and check a PDF. Compare the recorded image-format experiment before choosing a source format.
- Data and text: debug a fictional API record, compare JSON parsing results, and check how emoji and Unicode are counted.
- Permitted email tests: choose an inbox by how long you need access. Use an application you own or are authorized to test and keep recovery accounts on a durable address.
How we test examples
Our experiments use fixed synthetic inputs, actual browser runs, screenshots, and downloadable results. We compare values with expected outputs and reopen generated PDFs to check their pages. The editorial process explains AI assistance and the limits of automated checks; physical-device and external-delivery tests are separate.