Excise

Excise is a free, open-source PDF workbench for Windows, macOS, and Linux, pairing routine document handling with permanent content removal. It suits privacy-conscious individuals, developers, and teams that need auditable redaction and batch processing more than polished production publishing. Choose it for content-level redaction and command-line checks; choose something else when XFA, advanced signature validation, or specialist print workflows are central.

Overview

Excise edits the PDF itself rather than placing a visual black rectangle over sensitive material. That distinction matters for disclosures: text, images, and vector graphics are removed from content streams, while common document operations remain in the same application. It is an everyday PDF workbench, not a general-purpose replacement for Acrobat Pro or a text-editing and format-conversion suite.

The project is open source under the MIT licence and provides both a desktop application and command-line tooling. Its scope is deliberately practical, with explicit boundaries around prepress, color-managed print production, JavaScript-heavy documents, portfolios, and certificate-authority trust decisions.

Key features

Redaction and verification

Redaction removes text, images, and vector graphics from the PDF's content streams. By default, Excise also scrubs metadata, attachments, JavaScript, thumbnails, and hidden layers, then reports what it removed. That is a materially stronger approach than cosmetic covering, but the resulting file still deserves verification. The unredact command checks whether supposedly removed text remains recoverable, while audit finds text concealed beneath opaque overlays. Independent checks with Tesseract-based OCR, mutool, and pdftotext are documented as part of the workflow.

Document work and forms

The desktop tools cover viewing, search, text selection and copying, annotations, page organization, Bates numbering, and file-size reduction. Excise can fill and flatten AcroForm fields and create new fields, making it useful for ordinary case files, submissions, and records handling. OCR relies on the system's Tesseract installation. There is no text editing and no PDF conversion, so it cannot replace software intended to rewrite existing prose or change document formats.

Automation and developer use

The command-line tool supports batch workflows and stable JSON output, giving teams a repeatable way to process and inspect files. The repository also contains managed-code PDF core and rendering libraries, an Avalonia viewer control, and a C ABI over Excise.Core. Those components make Excise more attractive when an application needs embedded PDF capability rather than only a desktop editor.

Encryption, signatures, and XFA

Excise reads and writes AES-128 and AES-256 encrypted PDFs and inspects digital signatures against the operating system trust store. Signature inspection does not check certificate revocation or evaluate timestamp and long-term validation material, so regulated signature validation remains outside its remit. Dynamic XFA layouts are experimental, may omit or move content, and XFA fields cannot be filled; AcroForms are the dependable forms path.

Pricing

Open source: free (MIT licensed; no paid tiers stated). There are no seat charges, usage quotas, or subscription-renewal terms attached to this plan. It is a strong fit for individuals, self-managed teams, and developers who can operate desktop or command-line software and do not need a vendor support contract.

Platforms

Excise supports Windows, macOS, and Linux, and is also exposed as an API. Self-contained downloads are provided for Apple Silicon macOS, Windows 10/11 x64, Ubuntu/Debian, and x64 or ARM64 Linux. Builds are not signed or notarized and do not auto-update; release assets include SHA-256 files for users who want to verify downloads.

Who it's for

Pick Excise for sensitive PDFs that need actual content removal, an audit trail of cleanup, and repeatable command-line processing. It is especially well suited to developers integrating PDF functions through its libraries or C ABI, and to organizations comfortable managing open-source software themselves. It is a poor fit for prepress and color-managed production, JavaScript-dependent workflows, PDF portfolios, dynamic XFA forms, or decisions requiring full certificate revocation and long-term signature validation.

Pros and cons

Pros: Redaction removes underlying content instead of merely obscuring it.

Pros: Metadata, attachments, scripts, thumbnails, and hidden layers are scrubbed by default, with removal reporting.

Pros:unredact, audit, batch commands, and stable JSON output support repeatable quality checks.

Pros: Free MIT-licensed software runs across the three major desktop operating systems.

Cons: No text editing or PDF conversion limits it as an all-purpose document editor.

Cons: XFA support is experimental and XFA fields cannot be filled.

Cons: Signature inspection omits revocation, timestamp, and long-term validation checks.

Cons: Unsigned, unnotarized builds without auto-update add release-management work.

Alternatives

For a broader directory of redaction products, see Document Redaction Software; for general PDF authoring options, see PDF editors.

Docuflair Redact is the better choice when you want a paid service with a free trial, broad web and mobile coverage, and a 1,000-page monthly Basic allowance at €299 a month on annual billing with a 12-month minimum.

GroupDocs.Redaction suits teams seeking a document-processing SDK across hosted, self-hosted, web, mobile, and desktop environments.

PineThink Redact is preferable for a simple macOS or Windows desktop option with a single-document personal free tier and a 6.99 USD monthly Premium plan.

Redact PDF AI fits users who prefer web, API, or mobile access and prepaid page credits.

PII Tools is aimed at organizations wanting an annual, self-hosted business deployment.

RedactLaw is designed around hosted legal redaction with a five-document-per-month free tier.

LocalRedact is another free, local-first API and Python package.

Philter offers on-device redaction for personal, non-commercial, and evaluation use.

Verdict

Excise is the right choice for users who need free, cross-platform PDF handling with genuine content removal and command-line verification. Its strongest reason to choose it is the combination of destructive redaction, cleanup reporting, and auditable automation. Look elsewhere if your work depends on dynamic XFA, production print controls, JavaScript or portfolio features, or legally rigorous signature-trust validation.