PDF Attachment Manager

Inspect, extract, or embed file attachments inside PDF documents (e.g. Factur-X / ZUGFeRD XML e-invoices, raw CSV data, legal exhibits) in memory.

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Inspect, extract, or embed file attachments inside any PDF document. Easily retrieve embedded e-invoice XML data (Factur-X / ZUGFeRD), audit datasets, and legal exhibits into a ZIP archive, or embed new source files directly into the PDF catalog. Processing runs on the Elixuvo API in memory and files are never stored permanently.

Drag and drop your pdf files here

One file to begin. It is handled for this request and not retained.

How to use this tool

Upload or drag and drop your PDF document into the dropzone (up to 50 MB, 1000 pages).
Choose your operation mode: 'Extract Embedded Files' to download all attachments in a ZIP archive, or 'Attach New File to PDF' to embed a document.
If attaching, select your secondary file (XML, CSV, JSON, TXT, PDF, DOCX) and add an optional descriptive tag.
Click the action button to process in memory and download your completed file immediately.

Frequently asked questions

Quick answers about file privacy, processing modes, formats, and device support.

PDF documents can act as self-contained digital envelopes by storing arbitrary file binaries inside the document's /EmbeddedFiles name tree in the catalog dictionary. Viewers like Adobe Acrobat, Foxit, and Apple Preview display these files under the paperclip attachments pane.

Factur-X and ZUGFeRD are standard European hybrid e-invoicing formats (conforming to ISO 19005-3 / PDF/A-3) that combine human-readable PDF visuals with a machine-readable XML invoice file (factur-x.xml) embedded inside. This tool allows accountants and developers to easily extract embedded invoice XMLs or embed them into PDFs.

You can attach any digital file format, including XML e-invoices, CSV spreadsheets, JSON payloads, images, source code, CAD drawings, or supplementary PDF contracts.

When extracting embedded files, Elixuvo bundles all extracted binaries into a single clean ZIP archive and automatically generates an attachments-manifest.json file listing the names, descriptions, file sizes, and timestamps of all embedded assets.

No. All inspection, stream extraction, and PDF catalog injection occur strictly in-memory (RAM) inside ephemeral execution containers. No files or attachments are ever written to permanent disks or databases.

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PDF to PDF/A

Convert PDF documents into ISO-compliant PDF/A-1b or PDF/A-2b format for long-term legal archiving. Files are processed in memory and not stored.

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Flatten PDF

Bake interactive form fields, checkboxes, widgets, and annotations into permanent background content. Files are processed in memory and not stored.

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Password Protect PDF

Encrypt a PDF with a password using AES-256, then download the protected file. Processing runs on the Elixuvo API in memory — files and passwords are not stored permanently.

Compress PDF Online

Reduce a PDF’s file size with balanced, high, or best-quality settings. Processing runs on the Elixuvo API for this request only — files are not stored permanently.

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PDF Metadata Editor

Inspect and edit PDF document properties such as title, author, subject, and keywords, then download an updated copy. Processing runs on the Elixuvo API in memory — files are not stored permanently.