UR Viewer Web · No installation required
Read a book, fill and sign a PDF, show a presentation, inspect a photo or text file, or play a full-length local movie—all in one immediate browser workspace.
The Viewer loads from ursuite.app. The selected file is processed locally in your browser.
PDF Fill & Sign
Open it. Type. Sign. Save. Print or send the finished copy.
Add typed entries, dates, checkmarks, signature images, and handwriting-style text without installing a dedicated PDF application. Regular and handwriting text can coexist on the same page.
Six reading layouts support fixed-page and continuous reading. Rotate pages, print, and save page images where those commands apply.
EPUB & DRM-free ebooks
Reflowable ebooks provide chapter and Contents navigation with actual text-size changes—not magnification of the whole interface. UR Viewer preserves a logical reading position as the book repaginates.
EPUB opens directly. Supported MOBI, AZW, AZW3/KF8, PRC, FB2, and FB2.ZIP content uses local, transient preparation where needed and then follows the same reading model.
Encrypted or DRM-protected ebooks are not supported.
Comics
Open supported CBZ, CBR, CB7, and CBT comic archives as page-image books. Move between individual pages, continuous layouts, traditional spreads, and cover-first arrangements.
Single Page, Single Page Scrolling, Two Page, Two Page Scrolling, Cover, and Cover Scrolling support comics, graphic novels, magazines, and scanned page collections.
Save a selected page or extract the archive’s original page images when needed.
Images & photos
View common image formats including locally decoded HEIC and HEIF still photos from iPhone. Focus-centered zoom keeps the point of interest under the pointer, with pan available after zooming.
Presentations
Open the local presentation, navigate slides, and start Slide Show from the same Viewer. Focus-centered zoom and pan help inspect text, charts, diagrams, and images on a slide.
PPTX rendering remains local and is designed for reviewing and presenting existing slide decks. It does not add presentation editing controls.
Video & audio
Open a movie or audio file from your computer and use the native browser media pipeline through UR’s playback controls.
Play supported MP4, WebM, MOV, MKV, and OGV/OGG video with seeking, long-duration time display, volume, mute, playback speed, keyboard controls, and clean fullscreen viewing.
Compatibility: Container recognition does not guarantee codec decoding. MOV, MKV, HEVC/H.265, HDR, Dolby Vision, multichannel audio, and other combinations depend on browser, operating-system, and hardware support.
Open external SRT or WebVTT subtitles from the CC menu. Compatible text subtitle tracks embedded in MKV files are discovered locally and can be selected by language or track name. Captions remain synchronized through seeking, pause, speed changes, and fullscreen.
Play supported MP3, M4A/AAC, WAV, OGG/Opus, and FLAC with seeking, volume, mute, and playback speed. Codec support remains browser- and operating-system-dependent.
Plain text & source inspection
Open TXT and supported JSON, XML, Markdown, CSS, JavaScript, BAT, CMD, PowerShell, YAML, INI, and log files in a lightweight monospaced view. Spaces, tabs, indentation, and long lines remain readable.
Script and configuration files are inert text. UR Viewer Web does not execute JavaScript, PowerShell, batch commands, or source content, and this view is not intended to be a code editor.
What local processing means
UR Suite sends the Viewer application to your browser. When you choose a local file, the browser reads and renders it; the document, ebook, photo, or movie is not uploaded to a UR Suite server.
Internet access is still needed to load Viewer Web itself. Browser features, installed codecs, and normal browser security rules continue to apply.
The UR Viewer family
Open it anywhere.
Free, immediate browser access with no installation. The easiest place to start.
Open UR Viewer WebTake it anywhere.
Viewer resources packaged locally for offline use from a folder or removable drive, without conventional installation.
Explore Viewer PortableIntegrate it with Windows.
The Viewer with installed Windows conveniences such as File Explorer opening and Start menu access where available.
Explore Viewer Desktop