VOL. XCIV, NO. 247

★ FINANCIAL TOOLS & SERVICES DIRECTORY ★

PRICE: 5 CENTS

Sunday, October 5, 2025

View DiffcheckerView SemrushBack to Home

Head-to-head

Diffchecker vs Semrush comparison

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

Quick takeaways

Diffchecker adds Diff View coverage that Semrush skips.

Semrush includes App & Website Traffic, Data APIs, Sheets / Excel Add-ins, and Blogs categories that Diffchecker omits.

Diffchecker 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., and Real-time text diffing, diff merging, dark mode, and export to PDF..

Semrush is known for: Traffic Analytics tools to examine any website’s visitors, sources, engagement metrics, and competitive benchmarks., Rich API suite: Analytics and Projects APIs (Business plan), Trends API, Listing Management, and Map Rank Tracker. Current versions support API key (v3) and OAuth 2.0 with JSON (v4)., and API consumption billed in ‘units’ per request or per line of data. Historical queries cost more; some APIs like Listing Management and Map Rank Tracker are excluded from unit billing..

Semrush offers mobile access, which Diffchecker skips.

Diffchecker logo

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

Web
Desktop
API

Pricing

Free
Subscription

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.

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Semrush logo

Semrush

semrush.com

Comprehensive SEO, marketing, and web traffic analytics platform. API access for core Analytics and Projects requires a Business plan, with usage billed in API units. Some APIs—like Listing Management and Map Rank Tracker—don’t consume units. Enterprise security options include SAML SSO on Guru and Business tiers. A 7-day free trial is available for all paid plans.

Platforms

Web
Mobile
API

Pricing

Free
Subscription

Quick highlights

  • Traffic Analytics tools to examine any website’s visitors, sources, engagement metrics, and competitive benchmarks.
  • Rich API suite: Analytics and Projects APIs (Business plan), Trends API, Listing Management, and Map Rank Tracker. Current versions support API key (v3) and OAuth 2.0 with JSON (v4).
  • API consumption billed in ‘units’ per request or per line of data. Historical queries cost more; some APIs like Listing Management and Map Rank Tracker are excluded from unit billing.
  • Flexible exports in CSV, Excel, and PDF across tools. Position Tracking and Site Audit modules generate PDF reports; Position Tracking also supports direct Google Sheets export.
  • Google Sheets integration through the App Center ‘AI Automated Data Connector’ for automated reporting pipelines.

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Overlap

Shared focus areas

1 overlap

Both tools cover this research theme.

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.

Semrush

Distinct strengths include:

App & Website Traffic
Data APIs
Sheets / Excel Add-ins
Blogs
  • Traffic Analytics tools to examine any website’s visitors, sources, engagement metrics, and competitive benchmarks.
  • Rich API suite: Analytics and Projects APIs (Business plan), Trends API, Listing Management, and Map Rank Tracker. Current versions support API key (v3) and OAuth 2.0 with JSON (v4).
  • API consumption billed in ‘units’ per request or per line of data. Historical queries cost more; some APIs like Listing Management and Map Rank Tracker are excluded from unit billing.
  • Flexible exports in CSV, Excel, and PDF across tools. Position Tracking and Site Audit modules generate PDF reports; Position Tracking also supports direct Google Sheets export.

Feature-by-feature breakdown

AttributeDiffcheckerSemrush
Categories

Which research workflows each platform targets

Shared: APIs & SDKs

Unique: Diff View

Shared: APIs & SDKs

Unique: App & Website Traffic, Data APIs, Sheets / Excel Add-ins, Blogs

Asset types

Supported asset classes and universes

Other

Other

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, Mobile, 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

  • Traffic Analytics tools to examine any website’s visitors, sources, engagement metrics, and competitive benchmarks.
  • Rich API suite: Analytics and Projects APIs (Business plan), Trends API, Listing Management, and Map Rank Tracker. Current versions support API key (v3) and OAuth 2.0 with JSON (v4).
  • API consumption billed in ‘units’ per request or per line of data. Historical queries cost more; some APIs like Listing Management and Map Rank Tracker are excluded from unit billing.
  • Flexible exports in CSV, Excel, and PDF across tools. Position Tracking and Site Audit modules generate PDF reports; Position Tracking also supports direct Google Sheets export.
  • Google Sheets integration through the App Center ‘AI Automated Data Connector’ for automated reporting pipelines.
  • Native integrations with Google Analytics and Google Search Console to combine marketing and search performance data.
Tested

Verified by hands-on testing inside Find My Moat

Not yet

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Editor pick

Featured inside curated shortlists

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Frequently Asked Questions

Which workflows do Diffchecker and Semrush 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 Semrush require subscriptions?

Both Diffchecker and Semrush keep freemium access with optional paid upgrades, so you can trial each platform before committing.

Which tool has mobile access?

Semrush ships a dedicated mobile experience, while Diffchecker focuses on web or desktop access.

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 Semrush stands out for Traffic Analytics tools to examine any website’s visitors, sources, engagement metrics, and competitive benchmarks., Rich API suite: Analytics and Projects APIs (Business plan), Trends API, Listing Management, and Map Rank Tracker. Current versions support API key (v3) and OAuth 2.0 with JSON (v4)., and API consumption billed in ‘units’ per request or per line of data. Historical queries cost more; some APIs like Listing Management and Map Rank Tracker are excluded from unit billing..

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Stay on top of related tools

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Curation & Accuracy

This directory blends AI‑assisted discovery with human curation. Entries are reviewed, edited, and organized with the goal of expanding coverage and sharpening quality over time. Your feedback helps steer improvements (because no single human can capture everything all at once).

Details change. Pricing, features, and availability may be incomplete or out of date. Treat listings as a starting point and verify on the provider’s site before making decisions. If you spot an error or a gap, send a quick note and I’ll adjust.