Text & writing
Clean a paste, change its case, count words or compare revisions. Keep the result moving into the next tool.
Case / Cleanup / Diff / Unicode← Back to workSoftware / Local automation
A small job shouldn’t need another service.
UltraSuperConverter.
Convert. Refine.
Keep it local.
From a single HEIC photo to a repeatable document workflow. UltraSuperConverter brings media, text, PDFs and data tools together in a workspace that processes files on your computer.
100 local tools10 tool categories3 connected workspacesWindows portable v5.2.0
Inside the app
Three ways in.
One local engine.
Use a focused media queue for a quick conversion, find a specialist tool, or build a workflow you can run again. These are screenshots of the actual application.
Media Studio
A batch of files. A clear finish line.
Choose a preset, adjust the details and convert mixed image, video and audio files from one queue.
- Web and sharing presets
- Crop, watermark, trim and compare
- Individual files or a ZIP download
Toolbox
The right tool, without the hunt.
Search the full library, browse ten categories and keep favourites and recently used tools within reach.
- 100 local tools
- Search, categories and compact list view
- Text, PDF, media, data and developer utilities
Workspace
Turn repeated work into a recipe.
Save an ordered sequence of conversions, queue a batch and return to its outputs, history and report.
- Persistent file library and saved recipes
- Background jobs, cancellation and retry
- Downloadable results and conversion reports
Across the toolbox
The everyday jobs,
in one place.
Search the library, browse by category, save favourites and revisit recently used tools. The same local processing approach runs through the whole app.
PDFs & documents
Merge, split, compress and watermark PDFs. Extract text, prepare Word files and work with spreadsheets.
PDF / DOCX / XLSX / MarkdownImages & design
Convert HEIC photos, build responsive image packs, crop, add watermarks and inspect before-and-after results.
HEIC / WebP / AVIF / PNG / JPEGVideo & audio
Trim a clip, extract a soundtrack, build a slideshow or process a batch with the right delivery preset.
MP4 / WebM / GIF / MP3 / WAVData & development
Move between structured formats, format source, test an expression or decode a QR image without leaving the local workspace.
JSON / CSV / YAML / XML / CodeHashes & security
Calculate checksums, create HMACs, generate passwords or encrypt and decrypt with AES-256-GCM.
SHA / HMAC / AES-GCM / PasswordsRepeatable work
Save the steps.
Keep the results.
Workspace turns a sequence of conversions into a saved recipe. Run it on individual files or a combined batch, then inspect the output and its report.
Workflow architecture Files → steps → results
File library
Import files or a folder. Search, choose and order the inputs.
Saved recipe
Connect up to eight steps, with file filters and output naming.
Background queue
Follow stage progress. Cancel or retry a job when needed.
Files + report
Download results individually or as a ZIP with its report.
A library that stays useful. Files carry SHA-256 fingerprints, and saved recipes and job history persist locally between sessions.
Keep working while it runs. Closing the browser page leaves jobs running while the local engine stays on. Stopping the engine interrupts active work; pending jobs resume on restart.
Under the interface
Browser UI.
Native processing.
A Node.js and Express application connects the interface to purpose-built local engines. Conversion files are processed on the computer, without an external conversion service.
On your computer
HTML / CSS / JavaScriptMedia controls, tool workbenches and workflow editor
↓Node.js / ExpressLocal API, processing queue and background worker
Sharp / libvipsImages
FFmpeg / FFprobeVideo & audio
PDF-lib / PDF.jsPDFs
ExcelJS / DOCXDocuments & data
Match the engine to the job.
Sharp/libvips handles image work, with FFmpeg and FFprobe for video and audio. PDF-lib and PDF.js cover PDF manipulation and rendering; ExcelJS and document libraries handle structured office files.
Keep long jobs out of the page.
A separate Node worker runs saved recipes and reports stage progress. The workspace keeps job history, supports cancellation and retry, and recovers pending work when the local server restarts.
Make the handoff useful.
Output naming templates and collision handling keep a batch organised. ZIP bundles carry the results alongside a conversion report and checksums, including partial successes when an input fails.
A portable Windows home
Extract. Open.
Get to work.
The Windows x64 release bundles the launcher, Node.js runtime and conversion engines. Extract the ZIP and open the app in your browser, without installing Node.js separately.
Files, results, recipes and job history live in a Data folder alongside the app. Favourites and recent tools stay in the browser profile.
View Windows release