DocHub is free and works in my browser — why switch?

DocHub's free tier is genuinely generous and its Google Workspace integration is excellent — if that's what you need, it's a fine tool. The difference is architecture: DocHub uploads your file to its servers to edit and sign, while AttachKit does it in your browser with nothing uploaded. You also get AI auto-fill from a saved profile, forensic redaction, and an offline-verifiable signature, which DocHub doesn't offer.

Does AttachKit integrate with Google Drive and Gmail like DocHub?

Not yet — that's DocHub's clear advantage. AttachKit currently has no cloud-storage integration; you drop files manually and download the result (Drive/Dropbox integration is on the roadmap). If working directly inside Gmail and Drive is essential, DocHub goes deeper there.

When should I use DocHub instead of AttachKit?

When your workflow lives inside Google Workspace and you want to open, sign, and save PDFs directly from Gmail and Drive — DocHub's integration there is genuinely better. If keeping the file off third-party servers, AI auto-fill, or offline-verifiable signatures matter more, AttachKit is the pick.

Alternative · DocHub

AttachKit vs. DocHub — both edit PDFs in a browser; only one never uploads

DocHub: A free-leaning browser PDF editor and e-signature tool with deep Google Workspace and Gmail integration.

DocHub is a well-liked, free-leaning browser PDF editor and signer with a genuinely generous free tier — and its Google Workspace and Gmail integration is excellent, arguably better than anything AttachKit offers. If you live in Google Drive and Gmail, that tight integration is a real advantage. The architectural difference is the usual one: DocHub is a server-side web app — your file is uploaded to its servers to edit and sign. AttachKit does the same editing, signing, and redaction entirely in your browser, so the file never leaves your device, plus AI auto-fill and an offline-verifiable signature.

Why pick AttachKit for these cases

Edits and signs the same PDFs in your browser — DocHub uploads yours to its servers.
AI auto-fill from a saved profile, which DocHub doesn't have.
Forensic redaction + PII scan beyond DocHub's annotation tools.
An offline-verifiable signature that doesn't depend on a platform login.
Same Pro price ($12/mo) — but the file never leaves your device.

Side-by-side

A marks the side with the genuine advantage on that row — honestly, including the few where DocHub wins.

Price

DocHubA generous forever-free tier. Paid: Basic ~$6/mo, Pro ~$12/mo ($144/yr), as of 2026.

AttachKitFree: unlimited fill + 15 signed PDFs/mo. Pro $12/mo (or $120/yr — $10/mo).

Where your PDF goes

DocHubUploaded to DocHub's servers (they hold the plaintext) to edit, sign, and store.

AttachKitNowhere — editing and self-signing happen in your browser; the file never leaves the page. Send-to-sign is end-to-end encrypted.

Google Workspace integration

DocHubDeep and native — open from Gmail/Drive, sign in place, save back to Drive. A genuine strength if you live in Google's tools.

AttachKitNone — you drop files manually and download the result. Cloud-storage integration is on the roadmap.

AI auto-fill from your profile

DocHubNo saved-profile autofill — form-filling and field placement are manual.

AttachKitSave your details once; AI fills any form from your profile, with the PDF staying on-device — only field labels go to the model.

Recipient signup or signup-wall

DocHubSigning typically runs through a DocHub account / Google sign-in.

AttachKitRecipients never create an account — they open the link, sign in the browser, done.

True redaction & PII scan

DocHubAnnotation and whiteout-style cover-ups, not forensic byte-level redaction or PII auto-detect.

AttachKitForensic redaction (covered text is flattened away, not just hidden) + AI PII auto-detect, all in your browser.

Verifiable signatures

DocHubCloud e-signature with an audit trail, stored in DocHub.

AttachKitSelf-sign in-browser plus an offline-verifiable signature anyone can check on any device, free — no account or platform lock-in.

	DocHub	AttachKit
Price	A generous forever-free tier. Paid: Basic ~$6/mo, Pro ~$12/mo ($144/yr), as of 2026.	Free: unlimited fill + 15 signed PDFs/mo. Pro $12/mo (or $120/yr — $10/mo).
Where your PDF goes	Uploaded to DocHub's servers (they hold the plaintext) to edit, sign, and store.	Nowhere — editing and self-signing happen in your browser; the file never leaves the page. Send-to-sign is end-to-end encrypted.
Google Workspace integration	Deep and native — open from Gmail/Drive, sign in place, save back to Drive. A genuine strength if you live in Google's tools.	None — you drop files manually and download the result. Cloud-storage integration is on the roadmap.
AI auto-fill from your profile	No saved-profile autofill — form-filling and field placement are manual.	Save your details once; AI fills any form from your profile, with the PDF staying on-device — only field labels go to the model.
Recipient signup or signup-wall	Signing typically runs through a DocHub account / Google sign-in.	Recipients never create an account — they open the link, sign in the browser, done.
True redaction & PII scan	Annotation and whiteout-style cover-ups, not forensic byte-level redaction or PII auto-detect.	Forensic redaction (covered text is flattened away, not just hidden) + AI PII auto-detect, all in your browser.
Verifiable signatures	Cloud e-signature with an audit trail, stored in DocHub.	Self-sign in-browser plus an offline-verifiable signature anyone can check on any device, free — no account or platform lock-in.

Switching questions, answered

DocHub is free and works in my browser — why switch?: DocHub's free tier is genuinely generous and its Google Workspace integration is excellent — if that's what you need, it's a fine tool. The difference is architecture: DocHub uploads your file to its servers to edit and sign, while AttachKit does it in your browser with nothing uploaded. You also get AI auto-fill from a saved profile, forensic redaction, and an offline-verifiable signature, which DocHub doesn't offer.
Does AttachKit integrate with Google Drive and Gmail like DocHub?: Not yet — that's DocHub's clear advantage. AttachKit currently has no cloud-storage integration; you drop files manually and download the result (Drive/Dropbox integration is on the roadmap). If working directly inside Gmail and Drive is essential, DocHub goes deeper there.
When should I use DocHub instead of AttachKit?: When your workflow lives inside Google Workspace and you want to open, sign, and save PDFs directly from Gmail and Drive — DocHub's integration there is genuinely better. If keeping the file off third-party servers, AI auto-fill, or offline-verifiable signatures matter more, AttachKit is the pick.

Try AttachKit now

Drop a PDF — no signup. Unlimited fill & redact in your browser, plus 15 free signed PDFs every month.

Sign a PDF Fill a form Redact PII

Switching for good? Save your details once — every future form auto-fills.