Hilfe-Center
Guides, troubleshooting steps and answers for getting the most out of every My PDF tool.
Popular Questions
Tool Guides
Every tool page includes its own step-by-step instructions and FAQ — start with a category below.
Zusammenführen PDF Tools
Kombinieren Sie mehrere PDF-Dateien zu einem Dokument.
Teilen PDF Tools
Trennen, extrahieren oder entfernen Sie Seiten aus einem PDF.
Konvertieren PDF Tools
Wandeln Sie PDFs in andere Formate um und zurück.
Sicherheit PDF Tools
Schützen, signieren und versehen Sie sensible Dokumente mit Wasserzeichen.
Bearbeiten PDF Tools
Fügen Sie Text und Nummern hinzu und korrigieren Sie die Seitenausrichtung.
Optimieren PDF Tools
Reparieren Sie beschädigte Dateien und bereiten Sie sie fürs Web vor.
Dienstprogramme PDF Tools
Vergleichen, archivieren und reorganisieren Sie Ihre Dokumente.
Textwerkzeuge PDF Tools
Bereinigen, zählen, sortieren und generieren Sie Text online.
Kodierungswerkzeuge PDF Tools
Kodieren und dekodieren Sie Base64-, URL- und HTML-Zeichenfolgen.
Hash-Generatoren PDF Tools
Erzeugen Sie MD5-, SHA-1-, SHA-256- und SHA-512-Hashes.
Passwortwerkzeuge PDF Tools
Erzeugen Sie starke Passwörter und prüfen Sie deren Stärke.
Kennungs- & Zufallswerkzeuge PDF Tools
Erzeugen Sie UUIDs, Zufallszahlen, -zeichenfolgen und -farben.
Farbwerkzeuge PDF Tools
Konvertieren, wählen und erzeugen Sie Farben, Paletten und Verläufe.
JSON- & Code-Werkzeuge PDF Tools
Formatieren, validieren und minifizieren Sie JSON, XML, HTML, CSS und JS.
Datum- & Zeitwerkzeuge PDF Tools
Konvertieren Sie Zeitstempel und berechnen Sie Datumsdifferenzen und Alter.
QR- & Barcode-Werkzeuge PDF Tools
Erzeugen und lesen Sie QR-Codes und einfache numerische Barcodes.
Troubleshooting
The most common issues visitors run into, and how to resolve each one.
| Symptom | Likely Cause | How to Fix It |
|---|---|---|
| A file won't upload at all | The file exceeds the size limit, or the browser lost its connection mid-upload. | Confirm the file is under 50 MB and try again on a stable connection. |
| "Unsupported file type" error | The file's real content doesn't match an accepted format for that tool, even if the extension looks right. | Check the accepted formats listed on the tool page, or re-export the file from its original application. |
| "This file appears corrupted" error | The PDF's internal structure is damaged, often from an earlier failed save or an unreliable third-party tool. | Try re-exporting the original document to PDF again, or open and re-save it in a PDF reader first. |
| "This PDF is password-protected" error | The tool you chose cannot safely process an encrypted file. | Run the file through Unlock PDF first, then use your intended tool on the unlocked result. |
| Download link no longer works | Download links are single-purpose and expire automatically after a short window. | Re-run the original tool on your file to get a new, working download link. |
| Processing seems stuck or very slow | Very large or visually complex PDFs take longer, especially for compression and conversion. | Give it a little longer, or try compressing the file first to reduce its size before converting. |
Downloads
Once a tool finishes processing your file, you're given a one-time download link. That link points to a temporary result file, not a permanent address — it expires after a short window (currently about 30 minutes) and cannot be reused once the underlying file is cleaned up. If you need the result again later, simply re-run the tool; regenerating it takes only a few seconds.
Save the file to your device as soon as it downloads. We cannot recover a result once its retention window has passed, since nothing is kept beyond that point.
File Issues
Most upload rejections come down to one of a handful of checks every file passes through: an unsupported format, a file over the size limit, a corrupted PDF structure, or an encrypted PDF submitted to a tool that requires an unlocked file. The error shown always names which check failed rather than a generic "something went wrong" — if you're stuck, that message is the fastest way to know what to try next.
Performance Issues
Processing time scales with file size and complexity — a 100-page scanned PDF simply takes longer than a five-page text document. If a tool feels slow:
- Try compressing the file first with Compress PDF, then run your intended tool on the smaller result.
- Check your own network connection — a slow or unstable upload affects how quickly a file reaches our servers in the first place.
- If you see a rate-limit message, that's a deliberate safeguard against automated abuse, not a bug — wait a minute and try again.
Privacy Questions
Every file is processed automatically and deleted shortly afterward — nothing is read by a person, stored long-term, or shared with a third party. For the full details, see our Privacy Policy and our dedicated Security & Privacy page.