PST Viewer
Open Outlook PST files without Outlook: browse folders, search and read emails, and save attachments. Private.
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Runs entirely in your browser — nothing is uploaded
How to use the PST Viewer
- 1
Open your PST file
Click the box or drag the file onto it. It’s read by your browser — nothing is uploaded.
- 2
Read it instantly
The content appears on the page in a second or two, even for large files.
- 3
Convert if you need to
Use the related converters below to turn the file into PDF, CSV or another format.
Look inside an Outlook data file or archive on a Mac, a new PC or a phone. Browse every folder, search by sender or subject, read messages with formatting and download attachments — the PST never leaves your device.
Read the full guide with screenshotsFrequently asked questions
Is the PST Viewer free?
Yes — completely free with no daily limit and no account. ZapMorph’s viewers and developer tools are unmetered.
Is my file uploaded to a server?
No. The file is opened by your browser and displayed on this page. It is never uploaded, stored or logged — close the tab and it’s gone.
Does it work on my phone?
Yes. It works in any modern browser on iPhone, Android, Windows, Mac and Linux, with nothing to install.
How large can the file be?
There is no fixed limit — it depends on your device’s memory. Files of a few hundred megabytes open fine on most computers.
Related converters
PST to PDF
PSTPDF
Convert Outlook PST files to PDF with sender, recipients, date and message body. Private — nothing is uploaded.
PST to EML
PSTEML
Convert Outlook PST files to standard EML files that open in Thunderbird, Apple Mail and Outlook.
PST to MBOX
PSTMBOX
Combine Outlook PST files into one MBOX mailbox for import into Thunderbird, Apple Mail or other clients.
PST to CSV
PSTCSV
Export Outlook PST files to a CSV spreadsheet — one row per email with date, sender, subject and body.
PST to vCard
PSTvCard
Export the contacts in an Outlook PST file to a vCard (VCF) for iPhone, Android, Gmail and other apps.
PST to ICS
PSTICS
Export Outlook PST calendar appointments to an ICS file for Google Calendar, Apple Calendar or Outlook.com.
More file viewers
PDF Viewer
Open and read PDF files online with zoom and page navigation. Nothing is uploaded — the PDF opens on your device.
Word Document Viewer
View DOCX files online without Microsoft Word. Headings, lists, tables and images are shown. Private.
EML Viewer
Open .eml email files online and read the message, headers and attachments. Nothing is uploaded.
MSG Viewer
Open Outlook .msg files on Mac, Windows, Linux or phone — read the email and save attachments.
Excel Viewer
Open XLSX spreadsheets online and browse every sheet as a table — no Excel required. Private, in-browser.
CSV Viewer
Open CSV and TSV files as a sortable, searchable table in your browser. Handles large files. Private.