VOL. XCIV, NO. 247

★ FINANCIAL TOOLS & SERVICES DIRECTORY ★

PRICE: 5 CENTS

Thursday, December 4, 2025

Home My Collections

Tool Comparison

Diffchecker vs SEC API (sec-api.io) comparison

Compare pricing, supported platforms, categories, and standout capabilities to decide which tool fits your workflow.

Quick takeaways

Diffchecker adds Diff View coverage that SEC API (sec-api.io) skips.

SEC API (sec-api.io) includes Data APIs, Regulatory Filings Monitoring, Insider Data, 13F, 13D/13G, Financials, Management Compensation, and IPO categories that Diffchecker omits.

In depth comparison

Diffchecker

diffchecker.com

Diffchecker is a comparison tool for text, images, PDFs, Excel files, and folders. The free Basic plan is web-only, while Pro + Desktop adds offline diffs, ad-free usage, real-time text comparison, and desktop apps. Legal and Enterprise tiers include integrations (e.g. iManage) and advanced admin features. Enterprise also offers SAML SSO, SCIM provisioning, and priority support. An API is available with free and paid plans, and a 14-day trial is offered for Pro/Desktop plans.

Platforms

WebDesktopAPI

Pricing

FreeSubscription

Quick highlights

Supports multi-format comparisons: text, images, PDFs, Excel files, and folders.
Desktop apps allow fully offline diffs, ensuring comparisons never leave the user’s computer.
Real-time text diffing, diff merging, dark mode, and export to PDF.
Syntax highlighting for 20+ programming languages with character-by-character precision.
Public HTTP API supports text, image, PDF, and Excel diffs with tiered monthly quotas and input size limits.

Community votes (overall)

0% upvotes 0% downvotes

You haven't voted yet

View full profile Visit site

SEC API (sec-api.io)

sec-api.io

Editor’s pick Hands-on review

A commercial API suite for SEC/EDGAR data, designed for developers, quants, and compliance teams. The free tier includes 100 calls per month. Paid tiers unlock higher rate limits, more data (5 GB vs 15 GB monthly, with $0.30/GB overage), and features such as multiple API keys or redistribution rights for enterprise users. The platform emphasizes speed, with new filings typically available in under 300 ms.

Platforms

WebAPI

Pricing

FreeSubscription

Quick highlights

Comprehensive API endpoints: query, full-text search, real-time streaming via WebSocket, download/PDF generator, XBRL-to-JSON conversion, and section extractors for 10-K/10-Q/8-K filings.
Specialized form coverage including ADV, insider filings (Forms 3/4/5), 13F, 13D/G, Form 144, IPO registrations (S-1, 424B4), crowdfunding (Form C, Form D), Reg A filings, and fund reports (N-PORT, N-PX, N-CEN).
Datasets include executive compensation, directors and board members, audit fees, subsidiaries, and public float/outstanding shares.
Historical coverage back to 1993 with support for all 400+ EDGAR form types; new filings made available within ~300 ms of posting.
Live filing feeds available in real time via WebSocket for instant integration.

Community votes (overall)

0% upvotes 0% downvotes

You haven't voted yet

View full profile Visit site

Where they differ

Diffchecker

Distinct strengths include:

Diff View

Supports multi-format comparisons: text, images, PDFs, Excel files, and folders.
Desktop apps allow fully offline diffs, ensuring comparisons never leave the user’s computer.
Real-time text diffing, diff merging, dark mode, and export to PDF.
Syntax highlighting for 20+ programming languages with character-by-character precision.

SEC API (sec-api.io)

Distinct strengths include:

Data APIs Regulatory Filings Monitoring Insider Data 13F 13D/13G Financials Management Compensation IPO

Comprehensive API endpoints: query, full-text search, real-time streaming via WebSocket, download/PDF generator, XBRL-to-JSON conversion, and section extractors for 10-K/10-Q/8-K filings.
Specialized form coverage including ADV, insider filings (Forms 3/4/5), 13F, 13D/G, Form 144, IPO registrations (S-1, 424B4), crowdfunding (Form C, Form D), Reg A filings, and fund reports (N-PORT, N-PX, N-CEN).
Datasets include executive compensation, directors and board members, audit fees, subsidiaries, and public float/outstanding shares.
Historical coverage back to 1993 with support for all 400+ EDGAR form types; new filings made available within ~300 ms of posting.

Feature-by-feature breakdown

Attribute	Diffchecker	SEC API (sec-api.io)
Categories Which research workflows each platform targets	Shared: APIs & SDKs Unique: Diff View	Shared: APIs & SDKs Unique: Data APIs, Regulatory Filings Monitoring, Insider Data, 13F, 13D/13G, Financials, Management Compensation, IPO
Asset types Supported asset classes and universes	Other	Stocks, ETFs, Mutual Funds, Funds
Experience levels Who each product is built for	Beginner, Intermediate, Advanced	Beginner, Intermediate, Advanced
Platforms Where you can access the product	Web, Desktop, API	Web, API
Pricing High-level pricing models	Free, Subscription	Free, Subscription
Key features Core capabilities called out by each vendor	Unique Supports multi-format comparisons: text, images, PDFs, Excel files, and folders. Desktop apps allow fully offline diffs, ensuring comparisons never leave the user’s computer. Real-time text diffing, diff merging, dark mode, and export to PDF. Syntax highlighting for 20+ programming languages with character-by-character precision. Public HTTP API supports text, image, PDF, and Excel diffs with tiered monthly quotas and input size limits. API authentication uses an email query for the free tier, and API keys for paid plans.	Unique Comprehensive API endpoints: query, full-text search, real-time streaming via WebSocket, download/PDF generator, XBRL-to-JSON conversion, and section extractors for 10-K/10-Q/8-K filings. Specialized form coverage including ADV, insider filings (Forms 3/4/5), 13F, 13D/G, Form 144, IPO registrations (S-1, 424B4), crowdfunding (Form C, Form D), Reg A filings, and fund reports (N-PORT, N-PX, N-CEN). Datasets include executive compensation, directors and board members, audit fees, subsidiaries, and public float/outstanding shares. Historical coverage back to 1993 with support for all 400+ EDGAR form types; new filings made available within ~300 ms of posting. Live filing feeds available in real time via WebSocket for instant integration. XBRL-to-JSON service delivers standardized financial statements (income, balance sheet, cash flow) mapped to US GAAP items; dataset is survivorship-bias free.
Tested Verified by hands-on testing inside Find My Moat	Not yet	Yes
Editor pick Featured inside curated shortlists	Standard listing	Highlighted

Frequently Asked Questions

Which workflows do Diffchecker and SEC API (sec-api.io) both support?

Both platforms cover APIs & SDKs workflows, so you can research those use cases in either tool before digging into the feature differences below.

Do Diffchecker and SEC API (sec-api.io) require subscriptions?

Both Diffchecker and SEC API (sec-api.io) keep freemium access with optional paid upgrades, so you can trial each platform before committing.

How can you access Diffchecker and SEC API (sec-api.io)?

Both Diffchecker and SEC API (sec-api.io) prioritize web or desktop access. Investors wanting a mobile-first workflow may need to rely on responsive web views.

What unique strengths set the two platforms apart?

Diffchecker differentiates itself with Supports multi-format comparisons: text, images, PDFs, Excel files, and folders., Desktop apps allow fully offline diffs, ensuring comparisons never leave the user’s computer., and Real-time text diffing, diff merging, dark mode, and export to PDF., whereas SEC API (sec-api.io) stands out for Comprehensive API endpoints: query, full-text search, real-time streaming via WebSocket, download/PDF generator, XBRL-to-JSON conversion, and section extractors for 10-K/10-Q/8-K filings., Specialized form coverage including ADV, insider filings (Forms 3/4/5), 13F, 13D/G, Form 144, IPO registrations (S-1, 424B4), crowdfunding (Form C, Form D), Reg A filings, and fund reports (N-PORT, N-PX, N-CEN)., and Datasets include executive compensation, directors and board members, audit fees, subsidiaries, and public float/outstanding shares..

Keep exploring

Stay on top of related tools

Browse the categories and profiles that overlap most with this comparison to round out your shortlist.