UDFビューア
UYAPの.udfファイルをすぐに開いて読めます。インストール不要。
How to open a UDF file
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1
Choose or drag the fileDrop your .udf file into the area above, or click to pick it from your computer. Works on phones and tablets too.
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2
The document opens instantlyText, paragraph alignment, bold/italic formatting and tables are preserved and shown in readable form.
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Read, print or downloadPrint the document, copy its text, or download it as PDF or Word with one click — no need to upload the file again.
改善にご協力ください
このツールを評価してください。皆様のフィードバックは貴重です！
What is a UDF file and why won’t it open?
UDF is the document format used by UYAP, Türkiye’s national judiciary IT system. Case files, court records and expert reports are delivered with this extension. Because it is not a common format like Word or PDF, double-clicking it does nothing.
Normally you need to install the UYAP Document Editor, which requires Java, does not run everywhere and has no mobile version. This page removes that step: drop the file in your browser and read it. No install, no sign-up, no fee.
UDFビューアは無料ですか？
UDFビューアは完全に無料です。登録も会員登録も不要で、透かしも広告もありません。オンラインで動くので、スマホ・タブレット・パソコンのブラウザーで開くだけ。ソフトのインストールは不要です。
ファイルは処理が終わるとサーバーから削除されます。誰にも共有されず、内容が確認されることもありません。1日の上限も、試用期間も、隠れた料金もありません。
Why use this viewer
No UYAP Editor needed
No Java, no software install, no administrator rights. A browser is enough.
Works on mobile
The UYAP Document Editor has no mobile version. Here you can read a case file from your phone.
Formatting preserved
Alignment, bold/italic/underline and tables are shown as they are — not flattened to plain text.
Your file stays yours
The uploaded file is deleted after processing. No account, no email required.
Frequently asked questions
Can I open a UDF file without the UYAP Editor?
Yes. This page opens .udf files in your browser — no UYAP Document Editor required.
Can I open UDF on a phone?
Yes. The page works on phones and tablets, which is the practical way to read UDF on mobile since the UYAP editor has no mobile version.
Can I convert UDF to Word or PDF?
Yes. Once the document is open, press “Download PDF” or “Download Word” — you do not need to upload the file again.
Is my file stored on the server?
No. Your file is deleted after processing. No sign-up, no email, no payment.
Does it open digitally signed UDF files?
It shows the document’s text and formatting. It does not validate the electronic signature — use UYAP’s own tools for signature verification.
Is there a file size limit?
You can open a UDF of up to 25 MB at a time. Typical case documents are far smaller.