CleverUtils vs Lucidchart: Which Is Better in 2026?

CleverUtils is a free online file converter for people who simply need a file in another format and do not want to install software, create an account or pay for a subscription. It runs in the browser on any device, so the same tools work on a work laptop, a home PC or a phone.

The site covers more than 200 converters across 100+ formats. For audio there are MP3, WAV, FLAC and M4A conversions. Video tools handle MP4, MOV, MKV, AVI and GIF, including turning a video into audio or a short clip into a GIF. Image converters work with JPG, PNG, WebP, HEIC, AVIF, SVG and common camera RAW files, which is handy when an iPhone photo will not open on a Windows machine. Document and PDF tools cover DOCX, XLSX, PPTX and EPUB, and there are also converters for archives, fonts and 3D models.

Beyond plain format changes, CleverUtils includes a set of PDF tools: merge several PDFs into one, split a long document, compress a file so it fits an email attachment limit, and unlock a PDF you have the right to edit. There is also a growing group of AI tools. You can remove the background from a photo, replace it with a new one, upscale a small image, clean up a noisy photo, reduce noise in an audio recording and turn speech into text.

Privacy is kept simple. Files are sent over HTTPS, processed on the server and deleted automatically within two hours. There is no signup, no watermark is added to the results, and you do not need to leave an email address to download a file.

Under the hood the conversions rely on proven open-source engines: FFmpeg for audio and video, ImageMagick for images, LibreOffice for office documents and Ghostscript for PDFs. This keeps the output predictable and close to what desktop tools would produce.

For developers, CleverUtils offers a free public REST API that does not require an API key, so a conversion can be added to a script, a build pipeline or a small internal tool in a few lines of code. There is also an MCP server, which lets LLM agents call the converters directly when a workflow needs a file changed from one format to another.

Typical uses include students converting lecture slides to PDF, freelancers sending clients files in the format they asked for, office workers compressing scans before emailing them, and creators extracting audio from video or preparing images for the web in WebP or AVIF.

CleverUtils is a solo project built in Kyiv, Ukraine, and positioned as a free alternative to Convertio, Zamzar and CloudConvert. New converters and tools are added regularly, and the changelog on the site lists what has changed. If you need a quick, private and free way to convert a file, CleverUtils is built for exactly that.

Alternatives & competitors

Convertio, Zamzar, CloudConvert

Lucidchart is a powerful, widely used diagramming application that lets individuals and teams create flowcharts, org charts, network diagrams, process maps, technical diagrams, and much more, collaboratively in the browser. Diagrams are essential for understanding and communicating complex systems, processes, and structures, and Lucidchart provides a robust, professional tool for creating them across a huge range of use cases. From mapping a business process to designing a system architecture to charting an organisation, it gives teams the capability and flexibility to visualise virtually anything clearly and collaboratively.

The platform offers extensive shape libraries, templates, and capabilities to create detailed, professional diagrams of many kinds, with an intuitive drag-and-drop interface that makes building them straightforward. It supports real-time collaboration so teams can work on diagrams together, integrates with the productivity and business tools organisations use, and includes features for more advanced needs like importing data to generate diagrams and visualising technical systems. This combination of breadth, power, and collaboration makes Lucidchart suitable for everything from simple flowcharts to complex enterprise diagrams, serving a wide variety of professional needs in one tool.

Lucidchart is used by businesses, teams, engineers, IT professionals, and individuals across many functions who need to create diagrams to understand, document, and communicate processes, systems, and structures. The value is powerful, collaborative visualisation: it provides a capable, professional tool for turning complex information into clear diagrams that teams can build together and that help everyone understand systems and processes better. Because clear visualisation is so important to communication and problem-solving across business and technical work, having a robust, versatile diagramming tool is widely valuable. For the countless situations where a well-made diagram clarifies something words struggle to convey — a process, an architecture, an organisation — Lucidchart offers a powerful, flexible, and collaborative solution trusted by professionals and teams around the world.